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# Physics For Engineers

Covers the fundamental principles of physics and their applications in engineering, providing students with the knowledge and skills necessary to solve.

## mathematics

"Sum of all forces acting on a body is zero". This condition represents equilibrium's

• a. First condition
• b. Fourth condition
• c. Second condition
• d. Third condition

The total of the forces that make up the pair is [1] in algebra.

• ZERO

[1] motion is similar to precession.

• CURVILINEAR TRANSLATORY

The resultant force (the vector sum) should be [1] if all the forces are summed together as vectors.

• 0 NEWTON

Kinematics is a discipline of [1] that deals with motion.

• MECHANICS

What is Friends language name of International System of Unit

• a. None of the choices
• b. International Systeme
• c. Systeme d' Unites
• d. Systeme International d' Unites

Which of the following is not a scalar quantity?

• velocity
• potential energy
• work
• kinetic energy

When an object is at equilibrium, the sum of all torques on it is [1].

• ZERO

Laws to regulate measurement were originally developed to prevent fraud.

• True
• False

What is the magnitude of the sum of the two forces shown in the diagram below? fig2

• a. 46 N
• b. 102 N
• c. 142 N
• d. 137 N

[1] is the science of utilizing words, pictures, figures, graphs, and equations to describe the motion of objects.

• KINEMATICS

Standard unit of length in metric system.

• a. decimeter
• b. centimeter
• c. kilometer
• d. None of the choices

The temperature unit commonly used in USA is Centigrade.

• True
• False

A car starts from rest and accelerates uniformly over a time of 5.21 seconds for a distance of 110 m. Determine the acceleration of the car.

• a. 8.10 m/s2
• b. none of the choices
• c. 81.10 m/s2
• d. 810 m/s2

It is tendency of a force to cause an object to rotate abut an axis.

• a. Equilibrium
• b. Vectors
• c. Torque
• d. Resultant

185 fahrenheit = __________ centigrade ?

• d. none of the choices

The 300-lb force and the 400-lb force shown in the figure are to be held in equilibrium by a third force F acting at an unknown angle θ with the horizontal. Determine the values of F. NOTE : see fig-10 from the LIST OF FIGURE in Week-1

• none of the choices
• 5.31 lb
• F = 20.31 lb
• F = 205.31 lb

Convert the temperature given in the Fahrenheit scale to the Celsius scale: (answer is in numerical form only) 68° F __ ° C

• 20

700 yard = __________ cm ?

• a. 64,008 cm
• b. 65,008 cm
• c. 64,800 cm
• d. 65,800 cm

An object that is falling under the sole influence of gravity.

• a. free fall
• b. range
• c. free falling object
• d. none of the choices

Equilibrium concepts are also utilized to calculate the result of [1], non-concurrent systems of forces.

• NON-PARALLEL

The angular velocity of [1] is constant in size and direction.

175 m = _______________ yrd

• a. 195.382
• b. 193.182
• c. 198.132
• d. 191.382

When displacement is plotted against time, the result is a harmonic cave, which is known as [1].

• SHM

The ______ in simple harmonic motion is proportional and opposite to the displacement.

• a. period
• b. acceleration
• c. displacement
• d. angular harmonic motion

A shot at an initial velocity at an angle above the horizon.

• a. free fall
• b. kinematics
• c. projectile
• d. none of the choices

1.15 seconds apart, two balls are hurled upwards from the same position. The first ball had a 15.0 m/s initial velocity, whereas the second had a 12.0 m/s initial velocity. What is the height at which they collide?

• 7.30 m
• 7.31 m
• 7.32 m

100 inches = ____________ meter

• a. 2.54 meter
• b. 5.24 meter
• c. 25.4 meter
• d. none of the choices

100 cm = ______ in?

• a. 38 in
• b. 37.39 in
• c. 35 in
• d. 39.37 in

Another example is the rotation of a gyroscope in some instances. [1] is the name for this type of motion.

• PRECESSION

When two vectors don't share the same line of action, their vector sum is a [1] rather than an algebraic sum.

• GEOMETRIC SUM

Three forces act on a point: 3 N at 0°, 4 N at 90°, and 5 N at 217°. What is the net force?

• a. 2.1 N, 125 degrees
• b. 1.4 N, 125 degrees
• c. 1.4 N, 135 degrees
• d. 2.1 N, 135 degrees

The moment caused by the resultant force about some arbitrary point is equal to the sum of the moment due to all of the component forces of the system.

• True
• False

Two students are balancing on a 10m seesaw. The seesaw is designed so that each so that each side of the seesaw is 5m long. The students on the left weight 60kg and standing 3m away from the center. The student on the right weighs 45kg. The seesaw is parallel to the ground. Assume the board that makes the seesaw is massless.

• a. 4 m
• b. none of the choices
• c. 5 m
• d. 6 m

The symbol for torque is typically,

• True
• False

An Airplane accelerates down a runway at 3.20m/s2 for 32.8 s until is finally lifts off the ground. Determine the distance traveled before takeoff.

• 1721

Any number of [1] couples can be reduced to a single couple, whose magnitude is the algebraic sum of all the couples' moments.

• COPLANAR

A [1] is a plane angle that is subtended by an arc with the same length as the radius.

Convert 40.0 m to mm (answer is in numerical form only)

• 40000

Freezing point of water at sea level

The figure represents the concurrent force system acting at a joint of a bridge truss. Determine the value of P and F to maintain equilibrium of the forces. NOTE : see fig-9 from the LIST OF FIGURE in Week-1

• none of the choices
• P = 265.45 lb, F = 472.44 lb
• P = 65.45 lb, F = 12.44 lb
• P = 165.45 lb, F = 412.44 lb

A sprinter accelerates at 4 m/s2 for 3 seconds before reaching maximum speed in a 100 m race. What is their finishing time if they keep their top speed all the way to the end?

• 12 sec
• 10 sec
• 9 sec

To satisfy first condition of equilibrium, if rightward forces are positive, leftward forces must be:

• a. positive
• b. halved
• c. negative
• d. doubled

In order to add ______ quantities, one has merely to make the algebraic addition.

• a. Vector
• b. Resultants
• c. Scalar
• d. magnitude

[1] values that rotate an object counterclockwise are positive, while its values that rotate an object clockwise are negative.

• TORQUES

The [1] rule may be used to derive the vector notation of angular velocity and angular acceleration, just as it can for angular displacement.

• RIGHT-HAND

A [1] is simply a bob suspended on a thin rope or rod.

• PENDULUM

The motion is repeated in the same length of time.

• a. none of the choices
• b. angular harmonic motion
• c. acceleration
• d. period

The force applied is one of the three quantities of torque acceleration.

• True
• False

Defined as the cross product of the lever arm distance vector and the force vector.

• a. velocity
• b. none of the choices
• c. acceleration
• d. equilibrium

It is autonomous of the body’s mass.

• a. projectile
• b. free fall
• c. free falling object
• d. none of the choices

It is a bob suspended from a very light string or rod.

• a. none of the choices
• b. waves
• c. period
• d. simple pendulum

120 lbs = _____ kg?

• a. 54.4 kg
• b. 53.54 kg
• c. 45.45 kg
• d. 40.40 kg

Two weightless bars pinned together as shown in the fig-15 from the LIST OF FIGURE in Week-1 support a load of 35 kN. Determine the forces P and F acting respectively along bars AB and AC that maintain equilibrium of pin A.

• a. P = 90.14 kN, F = 64.03 kN
• b. P = 900.14 kN, F = 4.03 kN
• c. none of the choices
• d. P =9.14 kN, F = 6.03 kN

The distance of the mass below or above from the center position, or rest position.

• a. waves
• b. periodic motion
• c. displacement
• d. none of the choices

What is the standard unit of force?

• a. None of the choices
• b. Joules
• c. Newton
• d. Grams

The resultant and equilibrant of several sets of such known forces are determined by both graphical and analytical methods.

• a. method
• b. none of the choices
• c. object
• d. theory

In a certain non-concurrent force system it is found that summation of fx=-80lb, summation of fy=160lb and summation Mo=480lb-ft in a counterclockwise sense. Determine the point at which the resultant intersects the y-axis. NOTE: see figure 2 from the LIST OF FIGURE in Week-1

• a. 6 ft
• b. none of the choices
• c. 7 ft
• d. 8 ft

5.2 L = ________ gal ?

• a. 3.71 gal
• b. 52.13 gal
• c. 1.37 gal
• d. 2.53 gal

Since all of these forces are not entirely parallel, the position of the resultant can be established using the ________ or ________ methods.

• a. graphical, logical
• b. none of the choices
• c. analytical, graphical
• d. graphical, algebraic

A millimeter is about the thickness of a dime.

• True
• False

The angular displacement covered per unit time is referred to as [1].

• ANGULAR VELOCITY

Convert 40 mm to m (answer is in numerical form only)

• 0.04

A chandelier hangs from the ceiling on two cords. Calculate the tension in the two cords (F1 and F2). (Numerical Only)

• 1130

A physical quantity which has direction as well as magnitude is known as a:

• vector
• scalar
• force
• weight

[1] are quantities that may be completely defined by a single magnitude (or numerical value).

• SCALARS

???? is the angle between the force vector and the lever arm vector.

• True
• False

The effect of a certain non-concurrent force system is defined by the following data: summation of fx=90kN, summation of fy=-60kN, and summation of Mo=360kN counter clockwise. Determine the point at which the resultant intersects the x-axis. Note: see Fig 1, from the LIST OF FIGURE from week-1.

• a. none of the choices
• b. 8 m
• c. 7 m
• d. 6 m

A bolt connecting the main and rear frame of a mountain bike requires of 15 N.m to tighten. If you are capable of applying 40N of force to a wrench in any given direction, what is the minimum length of the wrench that will result in the required torque?

• a. none of the choices
• b. 0.375 m
• c. 3.75 m
• d. 37.5 m

100 m = ______ yrd ?

• a. 361.109 yrd
• b. 190.361 yrd
• c. 111.36 yrd
• d. 109.361 yrd

There are only two types of SI units, based and derived units.

• True
• False

Equilibrium is the tendency of a force to cause an object to rotate about an axis.

• True
• False

It is made of base unit for example, density.

• a. Metric units
• b. Base units
• c. None of the choices
• d. derived units

Is defined as the projection of uniform circular motion on a straight line.

• a. none of the choices
• b. simple harmonic motion
• c. period
• d. motion

500 g = __________ lbs?

• a. 9.1 lbs
• b. 1.1 lbs
• c. 11.1 lbs
• d. 10.1 lbs

The term "[1]" refers to a pendulum that swings once per second, giving it a two-second period.

• SECOND PENDULUM

Convert 50 L to mL (answer is in numerical form only)

• 50000

120 centigrade = _____________ Fahrenheit ?

• a. 244 Fahrenheit
• b. 248 Fahrenheit
• c. 482 Fahrenheit
• d. 842 Fahrenheit

Small, externally caused displacements from [1] are said to be stable.

• EQUILIBRIUM

standard unit of volume in metric system.

• a. liter
• b. kiloliter
• c. milliliter
• d. centiliter

The main advantages of the metric system is that it has many base unit for each physical quantity.

• True
• False

The same [1] principles drive accelerated translation and uniformly accelerated rotation arcs.

• KINEMATICS

A body at rest or moving with uniform velocity will have acceleration

• a. max
• b. min
• c. 0
• d. 1

In reality we are dealing with two sets of independent equations for the x and y directions and can envision the problem as a superposition of two completely independent motions that together are equivalent to the projectile motion.

• True
• False

Convert the temperature given in the Celsius scale to the Fahrenheit scale: (answer is in numerical form only) 0° C __ ° F

• 32

If there is a great number of forces, the ___________ to this system would potentially be simpler if the forces that are applied to the system are easy to break into components.

• a. logical solution
• b. algebraic solution
• c. none of the choices
• d. graphical solution

520 mm = _______________ inch

• a. 24.720
• b. 27.420
• c. 22.470
• d. 20.472

Two vectors A and B are added by drawing the arrows which represents the vector in such a way that the initial point of B is on the terminal point of A. The resultant C = A + B, is the vector from the initial point of A to the terminal point of B.

• a. Polygon Method
• c. Parallelogram Method
• d. Trigonometric Method

The mathematical quantities that are used to describe the motion of objects can be divided into three categories.

• True
• False

If the polygon is closed, the resultant is a vector of zero magnitude and has no direction. This is called the ________ vector.

• a. full
• b. none of the choices
• c. both A and B
• d. empty

Because potential and kinetic energy are different elements of the same substance, the name "[1]" was coined (mechanical energy).

• ENERGY

[1] do not have such constraints.

• ANALYTICAL METHODS

If a body is in rest or in uniform velocity, it is said to be in

• a. Equilibrium
• b. Uniform motion
• c. Rest
• d. Constant force

The resultant's position can be determined using the principles of [1].

• MOMENTS

350 Fahrenheit = _____________ Celsius

• a. 160.76
• b. 176.667
• c. 167.66
• d. 17.67

Calculate the absolute pressure at an ocean depth of 1.0 x 10³ m. Assume that the density of the water is 1.025 x 10³ kg/m³ and that Po = 1.01 x 10^5 Pa.

• 2.01 x 10^7
• 3.03 x 10^7
• 2.01 x 10^8
• 3.01 x 10^7

Such an object will rise until its velocity is ______________.

• a. 2
• b. 0 or zero
• c. 3
• d. 5

What force is necessary to generate a 20.0 N*m torque at an angle of 50 degrees from along a 3.00 m rod?

• a. 3 N
• b. 2 N
• c. none of the choices
• d. 2.3 N

The length of the arrow in a scaled vector diagram represents the [1] of a vector. The arrow is drawn at a specific length according to a scale.

When elastic bodies vibrate they produce the simplest type of periodic motion.

• a. simple harmonic motion or SHM
• b. simple pendulum
• c. period
• d. none of the choices

Equilibrium occurs when…

• a. all of the choices
• b. the net force on the object is zero.
• c. all the forces acting on an object are balanced.
• d. the sum of the upward forces equals the sum of the downward forces.

A red car is stopped at a red light. As the light turns green, it accelerates forward at 2.00 m/s 2 . At the exact same instant, a blue car passes by traveling at 62.0 km/h. When and how far down the road will the cars again meet?

• 295 m
• 296 m
• 297 m

Convert 50 mL to L (answer is in numeric form only)

• 0.05

What is the acronym of BTU in pressure?

• a. British Temperature Unites
• b. British Thermal Units
• c. none of the choices
• d. British temperature Unites

This type of system was exemplified by the [1] system. Because none of these forces are perfectly parallel, the resultant's position can be determined using graphical or algebraic methods.

• PARALLEL FORCE

[1] refers to the distance between the center position and the rest position of the mass.

• DISPLACEMENT X

The word measurement is derived from the Greek word ______________.

• a. none of the choices
• b. metron
• c. metre
• d. meter

The pressure units commonly used in the USA include the inch of mercury and the atmosphere (29.92 inches of mercury).

• True
• False

The cylinders in the figure have the indicated weights and dimensions. Assuming smooth contact surfaces, determine the reactions at A, B, C, and D on the cylinders. NOTE : see fig-13 from the LIST OF FIGURES in Week-1

• a. A = 347.39 kN, B = 600 kN, C = 400.85 kN, D = 347.39 kN
• b. A = 37.39 kN, B = 6000 kN, C = 4000.85 kN, D = 37.39 kN
• c. none of the choices
• d. A = 47.39 kN, B = 60 kN, C = 40.85 kN, D = 47.39 kN

Add the following vectors and determine the resultant. 3.0 m/s, 45 deg and 5.0 m/s, 135 deg

• a. 5.38 m/s
• b. 3.38 m/s
• c. 6.38 m/s
• d. 4.38 m/s

The algebraic sum of the moments of the forces about any point equals zero if the body is in [1] under the action of a number of forces.

• EQUILIBRIUM

What is the acronym of NIST?

• a. National Institute of Standards and Technology
• b. None of the choices
• c. Nation Institute of Standard and Technology
• d. National Institute of Science and Technology

Forces P and F acting along the bars shown in the figure maintain equilibrium of pin A. Determine the values of P. NOTE : see fig-14 from the LIST OF FIGURE in Week1

• a. none of the choices
• b. P = 4.76 kN
• c. P = -14.76 kN
• d. P = 14.76 kN

[1] are forces that run parallel to one other but do not intersect or form a parallel at a single point.

Determine the values of α and θ so that the forces shown in the figure will be in equilibrium.

• a. α =46.57 degrees and θ = 28.96 degrees
• b. α =4.57 degrees and θ = 58.96 degrees
• c. α =6.57 degrees and θ = 2.96 degrees
• d. none of the choices

If ∠A = 89 o and ∠C = 56o, find the value of ∠B.

• a. 25
• b. 35
• c. 55
• d. 45

Varignon’s Theorem states that the sum of torques due to several forces applied to a single point is equal to the torque due to the sum (resultant) of the forces.

• True
• False

What is the acronym of NPL?

• a. National Power Laboratory
• b. National Physical Laboratory
• c. Nation Physical Laboratory
• d. None of the choices

When displacement is plotted against time, the result will be a _________?

• a. displacement
• b. period
• c. simple pendulum
• d. harmonic curve

Convert 4.0 m to cm (answer is in numerical form only)

• 400

560 Kelvin = ______________ Celsius

• a. 288.65
• b. 286.85
• c. 200.85
• d. 256.88

Convert 400.00 US Quart to US Gallon (answer is in numerical value)

• 100

Quantities that are fully described by a magnitude.

• a. vectors
• b. none of the choices
• c. scalars
• d. direction

In practice, every three calendar years will have 365 days, and every fourth year is a “leap year”, which has 366 days, to make up for the extra quarter day over four years.

• True
• False

[1] is the motion of a body that repeats itself at regular intervals of time or period.

• PERIODIC MOTION

A uniform rod of length 50cm and mass 0.2kg is placed on a fulcrum at a distance of 40cm from the left end of the rod. At what distance from the left end of the rod should a 0.6kg mass be hung to balance the rod?

• a. 45 cm
• b. 4.5 cm
• c. none of the choices
• d. 54 cm

Convert 0.4 km to m (answer is in numerical form only)

• 400

A race car accelerates uniformly from 18.5 m/s to 46.1 m/s in 2.47 seconds. Determine the acceleration of the car.

• a. 12.1 m/s2
• b. none of the choices
• c. 11.2 m/s2
• d. 1.12 m/s2

Cords are loop around a small spacer separating two cylinders each weighing 400 lb. and pass, as shown in the fig-12 from the LIST OF FIGURE in Week-1 over a frictionless pulley to weights of 200 lb. and 400 lb. Determine the angle θ.

• a. θ = 70 degrees
• b. none of the choices
• c. θ = 60 degrees
• d. θ = 76 degrees

Convert 400.0 m to mm (answer is in numerical form only)

• 400000

Types of Si units which is the simple measurement for time, length, mass, temperature, amount of substance, electric current, and light intensity.

• a. Metric unit
• b. derived units
• c. None of the choices
• d. Base unit

Convert the temperature given in the Celsius scale to the Fahrenheit scale: (answer is in numerical form only) 45° C __ ° F

• 113

170 centigrade = ______________ fahrenheit ?

• a. none of the choices
• b. 338 fahrenheit
• c. 383 fahrenheit
• d. 388 fahrenheit

The cable and boom shown in the figure support a load of 600 lb. Determine the tensile force T in the cable and the compressive for C in the boom. NOTE : see fig-5 from the LIST OF FIGURE in Week-1

• a. T = 439.24 lb , C = 537.94 lb
• b. T = 49.24 lb , C = 57.94 lb
• c. T = 43.24 lb , C = 53.94 lb
• d. none of the choices

The motion of a body which repeats itself at regular intervals of time or period.

• a. displacement
• b. periodic motion
• c. none of the choices
• d. simple harmonic motion

Newton's [1] describes an object at rest.

• FIRST LAW OF MOTION

All free-falling objects (on Earth) accelerate at a rate of _____________.

• a. none of the choices
• b. 98m/s2
• c. 9.8m/s
• d. 9.8m/s2

The Principle of Moments, commonly known as Pythagorean's Theorem, holds that the sum of torques caused by many forces acting on a single point equals the torque caused by the sum (resultant) of the forces.

• True
• False

25.8 lbs = ___________ grams ?

• a. 11.70 grams
• b. 1170.268 grams
• c. 11702.68 grams
• d. none of the choices

The [1] value is denoted by the symbol vi.

• INITIAL VELOCITY

280 feet = _____________ meter ?

• a. 853.44 meter
• b. 85.344 meter
• c. 8534.4 meter
• d. none of the choices

122 meter = ______________ inches ?

• a. 48031.5 inches
• b. 4803.15 inches
• c. 480.315 inches
• d. none of the choices

The letter a stands for the object's [1].

• ACCELERATION

A cylinder weighing 400 lb. is held against a smooth incline by means of the weightless rod AB in the figure. Determine the forces P and N exerted on the cylinder by the rod and the incline. NOTE : see fig-6 from the LIST OF FIGURE in Week-1

• a. P = 0.9038 N , N = 418.60 lb
• b. P = 90.38 N , N = 41.860 lb
• c. none of the choices
• d. P = 9038 N , N = 4186.0 lb

In 1894, Lord Kevin's brother, James Thompson, introduced the term torque into English scientific literature.

• True
• False

Convert 40 m to mm (answer is in numerical form only)

• 40000

[1] A parallel force system in which the forces are equal in magnitude but opposite in direction on the same plane but not at the same point.

• FORCE COUPLE

What is the boiling point of water at sea level?

• b. none of the choices

The three forces in the figure create a vertical resultant acting through point A. If T is known to be 361 lb., compute the values of F and P.

• a. none of the choices
• b. F = 253.29 lb , P = 507.06 lb
• c. F = 2532.9 lb , P = 50.706 lb
• d. F = 25.329 lb , P = 507.06 lb

Commonly defined as the amount of heat energy required to raise the temperature of one gram of water by one degree celsius.

• a. gravity
• b. calorie
• c. none of the choices
• d. joules

In the United States, the National Physical Laboratory (NPL), a division of United States Department of Commerce, regulates commercial measurements.

• True
• False

If the body is in equilibrium under the action of a number of the forces, then the algebraic sum of the moments of the forces about any point is equal to one.

• True
• False

A 5.0 m-long uniform beam is held in position by a cord as shown in the diagram. If the tension in the cord is 8.0 N, what is the weight of the beam?

• a. 4.8 N
• b. 8.0 N
• c. 18 N
• d. 9.6 N

21 yard = __________ foot ?

• a. 6.3 foot
• b. 63 foot
• c. none of the choices
• d. 0.63 foot

One atmosphere is equivalent to 14.7 pounds per square inch.

• True
• False

An airplane accelerates down a runway at 3.20 m/s2 for 32.8 s until is finally lifts off the ground. Determine the distance traveled before takeoff.

• a. 1725 m
• b. none of the choices
• c. 1715 m
• d. 1720 m

The moment of the resultant of a system of forces with respect to any axis or point is equal to the vector sum of the moments of the individual forces of the system with respect to the same access or point.

• True
• False

[1] throws a pile of roof shingles from an 8.52-meter-high roof.

• LUKE AUTBELOE

The small piston of a hydraulic lift has an area of 0.50 m². A car weighing 1.5 x 10^4N sits on a rack mounted on the large piston. The large piston has an area of 0.50 m². How large force must be applied to the small piston to support the car?

• 3.6 x 10^4 N
• 3.7 x 10^4 N
• 1.5 x 10^4 N
• 3.5 x 10^4 N

The [1] is a handy tool for calculating the outcome of adding two (and only two) vectors that form a right angle. Only right-angled triangles will be able to use it.

• PYTHAGOREAN THEOREM

When the cycle in harmonic curve is repeated successively the result will be a series of__________?

• a. waves
• b. period
• c. displacement
• d. none of the choices

Suzie applies a force of 40.0 N at an angle of 60 degrees up from the horizontal to a wooden rod using a spring scale. If she generates a torque of 73.0 N*m, how long was the rod?

• a. 211 m
• b. 2.11 m
• c. none of the choices
• d. 21.1 m

A speed skater accelerates at 0.7 m/s2 for 5.2 seconds at the start of a race. At the end of the acceleration, what is their velocity? During the acceleration, how far did they travel?

• 28.2 m
• 28.4 m
• 28.6 m

Convert the temperature given in the Celsius scale to the Fahrenheit scale: (answer is in numerical form only) 25° C __ ° F

• 77

180 kelvin = ____________ fahrenheit ?

• a. 135.67 fahrenheit
• b. 13.567 fahrenheit
• c. none of the choices
• d. 1357.7 fahrenheit

________________ is defined as the forces which lies in the line of activity but do not intersect or forms a parallel at a common point.

• none of the choices
• Non-Concurrent Forces
• Parallel Forces
• Forces

150 gram = _______________ kilogram ?

• a. 0.15 kg
• b. none of the choices
• c. 15 kg
• d. 1.5 kg

Determine the resultant of the force system shown in the figure and its x and y intercepts.

• a. 161.314 lb
• b. none of the choices
• c. 163.114 lb
• d. 164.311 lb

Which of the following statements is false?

• Distance, velocity and acceleration are all vector quantities
• Scalar quantities have size or magnitude only
• Mass, length and time are all scalar quantities
• Vector quantities have both magnitude and direction

The symbol of torque is the Greek word for TAO.

• True
• False

[1] are quantities with both a magnitude and a direction that are completely specified.

• VECTORS

It is the world’s most widely used system of units, both in everyday commerce and in science.

• a. Metric system
• b. None of the choices
• c. English system
• d. SI units

68 fahrenheit = _______________ kelvin ?

• a. 293.15 kelvin
• b. 93.15 kelvin
• c. 23.15 kelvin
• d. none of the choices

If all of a body's pieces travel in circular sections around an axis, it is said to have pure [1] around that axis.

• ROTATION

Convert 0.4 m to km (answer is in numerical form only)

• 0.0004

Quantities that are fully described by both magnitude and a direction.

• a. acceleration
• b. scalars
• c. velocity
• d. vectors

120.5 centigrade = _______________ kelvin ?

• a. 93.65 kelvin
• b. none of the choices
• c. 33.65 kelvin
• d. 393.65 kelvin

A single force cannot keep a couple in equilibrium. However, it can only be balanced by a handful of [1] senses.

• OPPOSITE

The motion of objects can not be described by words

• True
• False

The tendency of a force to spin an item around an axis, fulcrum, or pivot is known as equilibrium, also known as moment or moment of force.

• True
• False

Does a bridge anchored resting on two pillars have any torque?

• a. No, Bridge can't have torque
• b. Yes, but it is at equilibrium
• c. No, it isn't moving
• d. Yes, but it will soon break because of the torque

The sum of the clockwise moments equals sum of the anticlockwise moments when the body is in equilibrium.

• True
• False

250 kelvin = ___________ centigrade ?

• a. none of the choices
• b. 23.15 centigrage

If three motion parameters are known, kinematic equations can be used to determine the value of an unknown motion parameter. The [1] of a freefall motion is frequently known.

• ACCELERATION

The resultant of non-concurrent force system is defined according to _________, __________, and ___________.

• a. none of the choices
• b. speed, inclination, position
• c. magnitude, inclination, position
• d. magnitude, displacement, position

The length of the lever arm connecting the axis to the point of the force application is one of the three quantities of torque magnitude.

• True

[1] are straightforward and straightforward, but their precision is limited to that of drawing equipment.

• GRAPHICAL METHODS

It is The Internationally recognized standard metric system.

• a. English System
• b. International System of Units
• c. Metric System
• d. None of the choices

If the centre of gravity of an object which is slightly disturbed is raised and the object returns to its original position when the disturbing force is removed, the object is said to be in

• static equilibrium
• unstable equilibrium
• neutral equilibrium
• stable equilibrium

The number of seconds it will require to make one complete vibration or one up and down is called?

• a. none of the choices
• b. displacement
• c. period
• d. waves

The Greek letter [1] denotes the summation of what comes after — the summation of forces.

• SIGMA

550 m =________ in ?

• a. 23.6535 in
• b. 23,653.5 in
• c. 21,653.5 in
• d. 21.6535 in

Convert 50 mL to L (answer is in numerical form only)

• 0.05

86.3 liter = ____________ gal ?

• a. 2.279 gal
• b. 22.798 gal
• c. none of the choices
• d. 227.98 gal

Convert 5.0 in to cm (answer is in numeric form only)

• 12.7

A 300-lb box is held at rest on a smooth plane by a force P inclined at an angle θ with the plane as shown in the figure. If θ = 45°, determine the value of P and the normal pressure N exerted by the plane. NOTE : see fig 7 from the LIST OF FIGURE in Week-1

• P = 21213 lb , N = 40.981 lb
• P = 2121.3 lb , N = 40981 lb
• P = 212.13 lb , N = 409.81 lb
• none of the choices

It is the science of describing the motion of objects using words, diagrams, numbers, graphs, and equations

• a. kinematics
• b. dynamics
• c. none of the choices
• d. statics

Convert 50 L to mL. (answer is in numeric form only)

• 50000

The [1] is the maximum displacement.

• AMPLITUDE R

50 kg = ____ g ?

• a. 51,000 g
• b. 52,000 g
• c. 40,000 g
• d. 50,000 g

It is decimalized system of measurement based on the metre and the gram.

• a. Si units
• b. None of the choices
• c. Metric system
• d. English system

The SI for torque is _______________.

• a. Meter
• b. Newton
• c. kg*m/s
• d. N⋅m

The velocity at a specific instant is called instantaneous angular velocity, just like it is called [1].

If a simple mechanical body feels neither linear nor angular acceleration, it is considered to be in [1], and it will remain in that state indefinitely until it is disturbed by an external force.

• EQUILIBRIUM

The magnitude of torque depends on two quantities only.

• True
• False

The motion is known as [1] because it is repeated in the same length of time.

• ANGULAR HARMONIC MOTION

An object thrown upward with velocity will rise to a height.

• a. free fall
• b. trajectory height
• c. motion
• d. range

The letter d represents [1].

• DISPLACEMENT

The word "[1]" is used to characterize equilibrium circumstances.

• BALANCED

The maximum value of the sine function.

• a. 3 or three
• b. 4 or four
• c. 1 or one
• d. 2 or two

You are helping your aunt move a piano on wheels from one room to another. When you push the piano horizontally, it moves at constant speed. What can you say about the piano?

• It is in equilibrium because it doesn’t experience a friction force.
• It is in equilibrium because it experiences net force opposite to the friction force
• It is in static equilibrium.
• It is in dynamic equilibrium.

The constant k is called the spring's force constant or "[1]" because it relies on the spring.

• COEFFICIENT OF STIFFNESS

Work and energy are [1], but force is a vector.

• SCALARS

The angle between the two Force is scalar is one of the three quantities of torque magnitude.

• True
• False

If net force acting on body is zero then body is said to be.

• a. not in equilibrium
• b. Imbalanced
• c. In equilibrium
• d. none of the choices

A feather is dropped on the moon from a height of 1.40 meters. The acceleration of gravity on the moon is 1.67 m/s2. Determine the time for the feather to fall to the surface of the moon.

• a. 1.29 sec
• b. none of the choices
• c. 1.39 sec
• d. 13.9 sec

A 90kg person stands on a scale and tries to pull himself up off the scale. The person is unable to pull himself off the scale but the scale reading decreases down to 23kg. What force is he exerting? (Numerical only)

• 660

150 Fahrenheit =_______ kelvin?

• a. 706.38 kelvin
• b. 338.706 kelvin
• c. 87.33 kelvin
• d. 33.87 kelvin

Standard unit of mass in metric system.

• a. milligram
• b. decigram
• c. gram
• d. centigram

460 Kelvin = ____________ Fahrenheit

• a. 333.86
• b. 368.33
• c. 300.33
• d. 386.33

Determine the magnitude of P and F necessary to keep the concurrent force system in the figure in equilibrium. NOTE : see fig-8 from the LIST OF FIGURE in week-1

• P = 133.25 N, F = -86.37 N
• none of the choices
• P = -133.25 N, F = 86.37 N
• P = -13.325 N, F = -86.37 N

A biker accelerates at 2 m/s2 for 3 seconds while cycling at 10 m/s. After the acceleration, what is their velocity? During the acceleration, how much ground did they cover?

• 37 m
• 38 m
• 39 m

The [1] is the perpendicular distance (a) between the lines of action of two equal and opposite parallel forces.

• ARM OF THE COUPLE

At sea level, the freezing temperature of water is 32 degrees Fahrenheit and the boiling point of water is 212 degrees Fahrenheit.

• True
• False

A wheel 20cm starts from rest and rotates about horizontal axis through the center with a constant acceleration of 0.5 radian/sec2. A point from the circumference is directly at the right of the center of the wheel. After the end of 2 seconds, find the angular displacement of the point.

Free-falling objects always encounter air resistance.

• True
• False

Torque is defined as the cross product of the lever arm distance vector and the force vector.

• True
• False

Once we know how long the projectile stayed in the air, finding the _____________ from the horizontal motion is simple.

• a. free falling object
• b. range
• c. none of the choices
• d. trajectory height

Convert 1 US Gallon to L (answer is in numeric form only and round it off until 2 decimal places)

• 3.78

The term torque was introduced into English scientific literature by Lord Kevin, in 1884.

• True
• False

The vectors are translated, to a common origin.

• a. Parallelogram Method
• b. Sine and Cosine Method
• c. Trigonometric Method
• d. Polygon Method

"[1]" means "at rest" or "stationary."

• STATIC

In triangle DEF, side e = 8 cm, f = 10 cm, and the angle at D is 60°. Find side d.

• a. 8.57
• b. 7.21
• c. 9.17
• d. 8.24

When an object is at rest and in a condition of equilibrium, we refer to it as being in "[1]."

• STATIC EQUILIBRIUM

To find the resultant vector's magnitude, use the _________ theorem

• a. Parallelogram
• b. Polygon
• c. Pythagorean
• d. Trigonometric

One ____________ would be to resolve a pair of forces using the parallelogram or triangle method into a resultant.

• a. graphical method
• b. logical method
• c. none of the choices
• d. algebraic method

The [1] is the number of seconds it takes to make one complete vibration or one up and down motion.