Calculus-Based Physics 1 MQ2- Midterm EXAM PDF

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LESTER SOURCECALCULUS BASED PHYSICS 1Question 1Complete Mark 1 out of 1.Flag questionQuestion textThe length of the lever arm connecting the axis to the point of the force application is one of the three quantities of torque magnitude.Select one: True FalseQuestion 2Complete Mark 1 out of 1.Flag que...

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LESTER SOURCE CALCULUS BASED PHYSICS 1

Question 1 Complete Mark 1.00 out of 1.00

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Question text 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.

Select one: True False Question 2 Complete Mark 1.00 out of 1.00

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Question text 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?

Select one: a. 18 N b. 8.0 N c. 4.8 N d. 9.6 N Question 3 Complete Mark 1.00 out of 1.00

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

Select one: a. max b. 0 c. 1 d. min Question 4 Complete

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Question text 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.

Select one: True False Question 5 Complete Mark 1.00 out of 1.00

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

Select one: a. 142 N b. 102 N c. 137 N

d. 46 N Question 6 Complete Mark 1.00 out of 1.00

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

Select one: True False Question 7 Complete Mark 1.00 out of 1.00

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Question text Equilibrium occurs when…

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

Question 8 Complete Mark 1.00 out of 1.00

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

Select one: a. Yes, but it is at equilibrium b. No, Bridge can't have torque c. Yes, but it will soon break because of the torque d. No, it isn't moving Question 9 Complete Mark 1.00 out of 1.00

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Question text 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? Select one: a. 3 N b. 2 N c. none of the choices d. 2.3 N Question 10

Complete Mark 1.00 out of 1.00

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

Select one: a. In equilibrium b. not in equilibrium c. Imbalanced d. none of the choices Question 11 Complete Mark 1.00 out of 1.00

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Question text 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.

Select one: True False Question 12 Complete Mark 1.00 out of 1.00

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Question text 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.

Select one: True False Question 13 Complete Mark 1.00 out of 1.00

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

Select one: True False Question 14 Complete Mark 1.00 out of 1.00

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

Select one: True False Question 15 Complete Mark 1.00 out of 1.00

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Question text 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?

Select one: a. 37.5 m b. none of the choices c. 3.75 m d. 0.375 m Question 16 Complete Mark 1.00 out of 1.00

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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? Select one: a. It is in static equilibrium. b. It is in equilibrium because it doesn’t experience a friction force. c. It is in dynamic equilibrium. d. It is in equilibrium because it experiences net force opposite to the friction force Question 17 Complete Mark 1.00 out of 1.00

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

Select one: True False Question 18 Complete Mark 1.00 out of 1.00

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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?

Select one: a. 45 cm b. none of the choices c. 54 cm d. 4.5 cm Question 19 Complete Mark 1.00 out of 1.00

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

Select one: True False Question 20 Complete Mark 1.00 out of 1.00

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

Select one: a. Third condition b. First condition c. Second condition d. Fourth condition Question 21 Complete Mark 1.00 out of 1.00

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

Select one: a. positive b. halved c. negative d. doubled Question 22 Complete Mark 1.00 out of 1.00

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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.

What distance from the center should the student on the right be if they want the seesaw to stay parallel to the ground?

Select one: a. 5 m b. 4 m c. none of the choices d. 6 m Question 23 Complete Mark 1.00 out of 1.00

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Question text The symbol of torque is the Greek word for TAO.

Select one: True False Question 24 Complete Mark 1.00 out of 1.00

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

Select one: a. Constant force b. Uniform motion c. Rest d. Equilibrium Question 25 Complete Mark 1.00 out of 1.00

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Question text 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?

Select one: a. 2.11 m b. 211 m c. 21.1 m d. none of the choices

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

Select one: True False

What is the standard unit of force? Select one: a. None of the choices b. Grams c. Joules d. Newton

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

Select one: a. magnitude b. Scalar c. Resultants d. Vector

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?

Select one: a. 211 m

b. 21.1 m c. none of the choices d. 2.11 m

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? Select one: a. It is in dynamic equilibrium. b. It is in equilibrium because it doesn’t experience a friction force. c. It is in static equilibrium. d. It is in equilibrium because it experiences net force opposite to the friction force

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.

Select one: True False

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. Select one: a. 12.1 m/s2 b. 11.2 m/s2 c. none of the choices d. 1.12 m/s2

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

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

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

Select one: True False

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

Select one: a. 2.1 N, 125 degrees b. 1.4 N, 125 degrees c. 2.1 N, 135 degrees d. 1.4 N, 135 degrees 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. Select one: True False

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

Select one: a. Uniform motion b. Constant force c. Equilibrium d. Rest

It is the science of describing the motion of objects using words, diagrams, numbers, graphs, and equations Select one: a. kinematics b. statics c. none of the choices d. dynamics

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.

Select one: True False

If net force acting on body is zero then body is said to be. Select one: a. none of the choices b. In equilibrium c. not in equilibrium d. Imbalanced

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

Select one: a. 5.38 m/s b. 3.38 m/s c. 4.38 m/s d. 6.38 m/s

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.

Select one: a. 810 m/s2 b. none of the choices c. 81.10 m/s2 d. 8.10 m/s2

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

Select one: a. 8.57 b. 7.21 c. 8.24 d. 9.17

A body at rest or moving with uniform velocity will have acceleration Select one: a. max b. 1

c. min d. 0

It is tendency of a force to cause an object to rotate abut an axis. Select one: a. Torque b. Vectors c. Resultant d. Equilibrium "Sum of all forces acting on a body is zero". This condition represents equilibrium's

Select one: a. Third condition b. Second condition c. First condition d. Fourth condition 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.

Select one: a. 1715 m b. 1720 m c. none of the choices d. 1725 m

The term torque was introduced into English scientific literature by Lord Kevin, in 1884. Select one: True False

What is the magnitude of the sum of the two forces shown in the diagram below? Select one: a. 46 N b. 137 N c. 102 N d. 142 N

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

Select one: True False

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

Select one: True False

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?

Select one: a. 4.5 cm b. none of the choices c. 45 cm d. 54 cm

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

Select one: True False

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

Select one: a. negative b. positive c. halved d. doubled

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. Select one: True

False

Quantities that are fully described by both magnitude and a direction. Select one: a. scalars b. vectors c. velocity d. acceleration

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.

Select one: a. 1.29 sec b. none of the choices c. 13.9 sec d. 1.39 sec

To find the resultant vector's magnitude, use the _________ theorem Select one: a. Polygon b. Pythagorean c. Trigonometric d. Parallelogram

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? Select one: a. 8.0 N b. 9.6 N c. 18 N d. 4.8 N

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?

Select one: a. 3.75 m b. 0.375 m c. none of the choices d. 37.5 m

The symbol of torque is the Greek word for TAO. Select one: True False

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

Select one: a. 45 b. 55 c. 35 d. 25

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.

Select one: a. Parallelogram Method b. Head-to-Tail Method c. Trigonometric Method d. Polygon Method

Equilibrium occurs when…

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

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? Select one: a. 2 N b. 3 N c. 2.3 N d. none of the choices

Quantities that are fully described by a magnitude. Select one: a. vectors

b. scalars c. direction d. none of the choices

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.

What distance from the center should the student on the right be if they want the seesaw to stay parallel to the ground?

Select one: a. 4 m b. 5 m c. 6 m d. none of the choices

The vectors are translated, to a common origin.

Select one: a. Polygon Method b. Parallelogram Method c. Sine and Cosine Method d. Trigonometric Method

The sum of the clockwise moments equals sum of the anticlockwise moments when the body is in equilibrium. Select one: True

False

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

Select one: a. empty b. full c. none of the choices d. both A and B

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

Select one: a. none of the choices b. object c. method d. theory

The SI for torque is _______________. Select one: a. kg*m/s b. Newton c. N⋅m d. Meter

The magnitude of torque depends on two quantities only. Select one: True False The motion of objects can not be described by words Select one: 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. Select one: True False...