Conceptual Physics: Questions On Rotational Motion
10 Questions
| Total Attempts: 1967
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Questions and Answers
- 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
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