Conceptual Physics: Questions On Rotational Motion

10 Questions | Total Attempts: 2080

SettingsSettingsSettings
Please wait...
Conceptual Physics: Questions On Rotational Motion

.


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