Conceptual Physics: Questions On Rotational Motion

61 Questions | By Drtaylor | Updated: Mar 21, 2022 | Attempts: 2655

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Conceptual Physics: Questions On Rotational Motion - Quiz

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1.

Horses that move with the fastest linear speed on a merry-go-round are located
- A.
  
  Near the center
- B.
  
  Near the outside
- C.
  
  Anywhere, because they all move at the same speed
2.

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
- A.
  
  Doubles
- B.
  
  Halves
- C.
  
  Remains the same
3.

Since each rolling wheel of a railroad train is tapered, the narrow part of the wheel has a tangential speed that is
- A.
  
  Greater than that of the wide part
- B.
  
  Smaller than that of the wide part
- C.
  
  The same as that of the wide part
4.

When a train makes a curve, different parts of the wheel rims
- 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
5.

The tapered shape of the parts of the wheels that ride on railroad tracks allows opposite wheels to
- A.
  
  In effect, vary their diameters
- B.
  
  Travel at different linear speeds for the same rotational speed
- C.
  
  Both A and B are correct
6.

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?
- A.
  
  Inside horse
- B.
  
  Outside horse
- C.
  
  Both move at the same speed in m/s
7.

If a turntable's rotational speed is doubled, then the linear speed of a pet hamster sitting on the edge of the record will
- A.
  
  Double
- B.
  
  Double
- C.
  
  Remain the same
8.

Suppose the circumference of a bicycle wheel is 2 meters. If it rotates at 1 revolution per second when you are riding the bicycle, then your speed will be
- A.
  
  1 m/s
- B.
  
  2 m/s
- C.
  
  3 m/s
- D.
  
  3.14 m/s
- E.
  
  6.28 m/s
9.

Consider a string with several rocks tied along its length at equally spaced intervals. You whirl the string overhead so that the rocks follow circular paths. Compared to a rock in the middle of the string, a rock at the outer end moves
- A.
  
  Half as fast
- B.
  
  Twice as fast
- C.
  
  At the same linear speed
10.

A broom is easier to balance on its end when the heavier end (the brush end) is
- A.
  
  Nearest your hand
- B.
  
  Highest, farthest from your hand
- C.
  
  Same either way
11.

An industrial flywheel has a greater rotational inertia when most of its mass is
- A.
  
  Nearest the rim
- B.
  
  Nearest the axis
- C.
  
  Uniformly spread out as in a disk
12.

A coin and a ring roll down an incline starting at the same time. The one to reach the bottom first will be the
- A.
  
  Ring
- B.
  
  Coin
- C.
  
  Both reach the bottom at the same time
13.

The rotational inertia of your leg is greater when your leg is
- A.
  
  Straight
- B.
  
  Bent
- C.
  
  Same either way
14.

A torque acting on an object tends to produce
- A.
  
  Equilibrium
- B.
  
  Rotation
- C.
  
  Linear motion
- D.
  
  Velocity
- E.
  
  A center of gravity
15.

On a balanced seesaw, a boy three times as heavy as his partner sits
- 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
16.

Put a pipe over the end of a wrench when trying to turn a stubborn nut on a bolt, to effectively make the wrench handle twice as long, you'll multiply the torque by
- A.
  
  Two
- B.
  
  Four
- C.
  
  Eight
17.

Toss a baseball bat into the air and it wobbles about its
- A.
  
  Geometrical center
- B.
  
  Center of mass
- C.
  
  Heavier end
18.

The long, heavy tail of a spider monkey enables the monkey to easily vary its
- A.
  
  Weight
- B.
  
  Momentum
- C.
  
  Inertia
- D.
  
  Center of gravity
- E.
  
  None of these
19.

The center of mass of a human body is located at a point
- 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
20.

The famous Leaning Tower of Pisa doesn't topple over because its center of gravity is
- A.
  
  Above a place of support.
- B.
  
  Relatively low for such a tall building.
- C.
  
  Stabilized by its structure.
- D.
  
  Displaced from its center.
- E.
  
  In the same place as its center of mass.
21.

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
- A.
  
  Remains constant.
- B.
  
  Increases.
- C.
  
  Decreases.
22.

Centrifugal forces are an apparent reality to observers in a reference frame that is
- A.
  
  Moving at constant velocity.
- B.
  
  An inertial reference frame.
- C.
  
  At rest.
- D.
  
  Rotating.
- E.
  
  None of these
23.

A person weighs less at the equator than at the poles. The main reason for this has to do with
- A.
  
  The spin of the Earth.
- B.
  
  The shape of the Earth.
- C.
  
  The influence of the sun, moon, and all the planets.
- D.
  
  The law of action and reaction.
24.

When a twirling ice skater brings her arms inward, her rotational speed
- A.
  
  Increases.
- B.
  
  Decreases.
- C.
  
  Remains the same.
25.

Consider a rotating donut-shaped space habitat where living quarters are on the inside surface farthest from the axis. If the rotational speed of the habitat increases, the apparent weight of people inside
- A.
  
  Increases.
- B.
  
  Decreases.
- C.
  
  Stays the same.
- D.
  
  Is always zero.