Question 1

Your pet hamster sits on a record player whose angular speed is constant.If he moves to a point twice as far from the center,then his linear speed

Accepted Answer

A) doubles. 
B) halves. 
C) remains the same. 
A) doubles. 
B) halves. 
C) remains the same. A

Question 2

When doing somersaults,you'll more easily rotate when your body is

Accepted Answer

A) straight with both arms above your head. 
B) straight with both arms at your sides. 
C) balled up. 
D) no difference 
A) straight with both arms above your head. 
B) straight with both arms at your sides. 
C) balled up. 
D) no difference C

Question 3

When a train makes a curve,different parts of the wheel rims

Accepted Answer

A) cover a different distance in the same time. 
B) must all expand at the same time. 
C) must all contract at the same time. 
D) vibrate at different rates. 
A) cover a different distance in the same time. 
B) must all expand at the same time. 
C) must all contract at the same time. 
D) vibrate at different rates. A

Question 4

Use the following figure to answer the question:  
-A carnival has a Ferris wheel where the seats are located halfway between the center and outside rim.If you were at the outside rim,your angular speed while riding on this Ferris wheel would be

Accepted Answer

A) less and your tangential speed more. 
B) more and your tangential speed less. 
C) the same and your tangential speed less. 
A) less and your tangential speed more. 
B) more and your tangential speed less. 
C) the same and your tangential speed less.

Question 5

The center of gravity of a circular disk of sheet metal is

Accepted Answer

A) at the center of the disk. 
B) midway between the center and the outside. 
C) two-thirds of the way between the center and the outside. 
D) impossible to predict without knowing the metal density. 
A) at the center of the disk. 
B) midway between the center and the outside. 
C) two-thirds of the way between the center and the outside. 
D) impossible to predict without knowing the metal density.

Question 6

On a balanced seesaw,a boy three times as heavy as his partner sits

Accepted Answer

A) 1/3 the distance from the fulcrum. 
B) less than 1/3 the distance from the fulcrum. 
C) more than 1/3 the distance from the fulcrum. 
A) 1/3 the distance from the fulcrum. 
B) less than 1/3 the distance from the fulcrum. 
C) more than 1/3 the distance from the fulcrum.

Question 7

Toss a baseball bat into the air and it wobbles about its

Accepted Answer

A) geometrical center. 
B) center of mass. 
C) heavier end. 
A) geometrical center. 
B) center of mass. 
C) heavier end.

Question 8

Two people are balanced on a seesaw.If one person leans toward the center of the seesaw,that person's end of the seesaw will

Accepted Answer

A) rise. 
B) fall. 
C) stay at the same level. 
D) rise and then fall. 
E) fall and then rise. 
A) rise. 
B) fall. 
C) stay at the same level. 
D) rise and then fall. 
E) fall and then rise.

Question 9

Use the following figure to answer the question:  
-Suppose you are at the center of a large freely-rotating horizontal turntable in a carnival funhouse.As you crawl toward the edge,the angular momentum of you and the turntable

Accepted Answer

A) decreases. 
B) increases. 
C) remains the same,but the RPMs decrease. 
D) decreases in direct proportion to your decrease in RPMs. 
E) none of these 
A) decreases. 
B) increases. 
C) remains the same,but the RPMs decrease. 
D) decreases in direct proportion to your decrease in RPMs. 
E) none of these

Question 10

If a turntable's rotational speed is doubled,then the linear speed of a pet hamster sitting on the edge of the record will

Accepted Answer

A) double. 
B) halve. 
C) remain the same. 
A) double. 
B) halve. 
C) remain the same.

Question 11

The gravitational field best suited for humans living in an outer space colony is

Accepted Answer

A) zero. 
B) g) 
C) one-quarter g. 
D) one-half g. 
E) three-quarters g. 
A) zero. 
B) g) 
C) one-quarter g. 
D) one-half g. 
E) three-quarters g.

Question 12

A baseball bat is balanced on a fulcrum.The center of gravity of the bat is located

Accepted Answer

A) closer to the handgrip. 
B) above the fulcrum. 
C) near the heavy end. 
A) closer to the handgrip. 
B) above the fulcrum. 
C) near the heavy end.

Question 13

Use the following figure to answer the question:  
-If the Earth had two identical moons in one circular orbit,and the moons were as far apart in that orbit as they could be,the center of gravity of the Earth-moons system would be

Accepted Answer

A) at the center of the Earth. 
B) inside the Earth,but off center. 
C) outside the Earth,but within the orbital path of the moons. 
D) outside the Earth,but beyond the orbital path of the moons. 
A) at the center of the Earth. 
B) inside the Earth,but off center. 
C) outside the Earth,but within the orbital path of the moons. 
D) outside the Earth,but beyond the orbital path of the moons.

Question 14

The chef at the infamous Fattening Tower of Pizza tosses a spinning disk of uncooked pizza dough into the air.The disk's diameter increases during the flight,while its rotational speed

Accepted Answer

A) remains constant. 
B) increases. 
C) decreases. 
A) remains constant. 
B) increases. 
C) decreases.

Question 15

If you balance a broom horizontally on one finger,the center of gravity of the broom will be above your finger - closer to the bristles end than the handle end.If you saw the broom in two pieces at that point and weigh the two parts on a scale,you'll find that the heavier part is the

Accepted Answer

A) bristles part. 
B) handle part. 
C) both the same weight 
A) bristles part. 
B) handle part. 
C) both the same weight

Question 16

The center of mass of a human body is located at a point

Accepted Answer

A) that is fixed,but different for different people. 
B) that is always directly behind the belly button. 
C) that changes as a person bends over. 
D) none of these 
A) that is fixed,but different for different people. 
B) that is always directly behind the belly button. 
C) that changes as a person bends over. 
D) none of these

Question 17

Which moves faster in m/s on a merry-go-round: a horse on the inside or a horse on the outside near the outer rail?

Accepted Answer

A) inside horse 
B) outside horse 
C) Both move at the same speed in m/s. 
A) inside horse 
B) outside horse 
C) Both move at the same speed in m/s.

Question 18

Consider a bowling alley inside a rotating space torus (huge "donut").Compared to your bowling experience on earth,you will notice that the ball

Accepted Answer

A) feels lighter when you throw it in the direction of the moving alley,and heavier when you throw it in the opposite direction. 
B) feels heavier when you throw it in the direction of the moving alley,and lighter when you throw it in the opposite direction. 
C) veers to the right when you throw it in the direction of the moving alley,and to the left when you throw it in the opposite direction. 
D) none of these 
A) feels lighter when you throw it in the direction of the moving alley,and heavier when you throw it in the opposite direction. 
B) feels heavier when you throw it in the direction of the moving alley,and lighter when you throw it in the opposite direction. 
C) veers to the right when you throw it in the direction of the moving alley,and to the left when you throw it in the opposite direction. 
D) none of these

Question 19

A ring and a disk,initially at rest,roll down a hill together.The one to reach the bottom first

Accepted Answer

A) is the ring. 
B) is the disk. 
C) depends on the masses. 
D) depends on the relative rotational inertias. 
E) Both reach the bottom at the same time. 
A) is the ring. 
B) is the disk. 
C) depends on the masses. 
D) depends on the relative rotational inertias. 
E) Both reach the bottom at the same time.

Question 20

A coin and a ring roll down an incline starting at the same time.The one to reach the bottom first will be the

Accepted Answer

A) ring. 
B) coin. 
C) Both reach the bottom at the same time. 
A) ring. 
B) coin. 
C) Both reach the bottom at the same time.

Exam 8: Rotational Motion

Your pet hamster sits on a record player whose angular speed is constant.If he moves to a point twice as far from the center,then his linear speed

When doing somersaults,you'll more easily rotate when your body is

When a train makes a curve,different parts of the wheel rims

Use the following figure to answer the question: -A carnival has a Ferris wheel where the seats are located halfway between the center and outside rim.If you were at the outside rim,your angular speed while riding on this Ferris wheel would be

The center of gravity of a circular disk of sheet metal is

On a balanced seesaw,a boy three times as heavy as his partner sits

Toss a baseball bat into the air and it wobbles about its

Two people are balanced on a seesaw.If one person leans toward the center of the seesaw,that person's end of the seesaw will

Use the following figure to answer the question: -Suppose you are at the center of a large freely-rotating horizontal turntable in a carnival funhouse.As you crawl toward the edge,the angular momentum of you and the turntable

If a turntable's rotational speed is doubled,then the linear speed of a pet hamster sitting on the edge of the record will

The gravitational field best suited for humans living in an outer space colony is

A baseball bat is balanced on a fulcrum.The center of gravity of the bat is located

Use the following figure to answer the question: -If the Earth had two identical moons in one circular orbit,and the moons were as far apart in that orbit as they could be,the center of gravity of the Earth-moons system would be

The chef at the infamous Fattening Tower of Pizza tosses a spinning disk of uncooked pizza dough into the air.The disk's diameter increases during the flight,while its rotational speed

If you balance a broom horizontally on one finger,the center of gravity of the broom will be above your finger - closer to the bristles end than the handle end.If you saw the broom in two pieces at that point and weigh the two parts on a scale,you'll find that the heavier part is the

The center of mass of a human body is located at a point

Which moves faster in m/s on a merry-go-round: a horse on the inside or a horse on the outside near the outer rail?

Consider a bowling alley inside a rotating space torus (huge "donut").Compared to your bowling experience on earth,you will notice that the ball

A ring and a disk,initially at rest,roll down a hill together.The one to reach the bottom first

A coin and a ring roll down an incline starting at the same time.The one to reach the bottom first will be the

About Science

Newtons First Law of Motion: Inertia

Linear Motion

Newtons Second Law of Motion: Force and Acceleration

Newtons Third Law of Motion: Action and Reaction

Momentum

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Projectile and Satellite Motion

Atomic Nature of Matter

Solids

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Temperature,heat,and Expansion

Heat Transfer

Change of Phase

Thermodynamics

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Sound

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Electrostatics

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Electromagnetic Induction

Properties of Light

Color

Reflection and Refraction

Light Waves

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Light Quanta

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Special Theory of Relativity

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