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Rotational Motion Review

Rotational Motion Review. Consider a point on a stationary bicycle wheel as the wheel makes exactly four complete revolutions about a fixed axis. Compare the linear and angular displacement of the point. Both are zero. Only the angular displacement is zero.

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Rotational Motion Review

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  1. Rotational Motion Review

  2. Consider a point on a stationary bicycle wheel as the wheel makes exactly four complete revolutions about a fixed axis. Compare the linear and angular displacement of the point. • Both are zero. • Only the angular displacement is zero. • Only the linear displacement is zero. • Neither is zero.

  3. Consider a point on a stationary bicycle wheel as the wheel makes exactly four complete revolutions about a fixed axis. What is the angular displacement in radians? • Zero • pi • 2pi • 4pi • 8pi

  4. Consider a point on a bicycle wheel as the wheel turns about a fixed axis, neither speeding up nor slowing down. Compare the linear and angular accelerations of the point. • Both are zero. • Only the angular acceleration is zero. • Only the linear acceleration is zero. • Neither is zero.

  5. Consider a point on a bicycle tire that is momentarily in contact with the ground as the bicycle rolls across the ground with constant speed. The direction for the centripetal acceleration for this point at that moment is: • upward. • down toward the ground. • forward. • at that moment the acceleration is zero.

  6. Which of the following is constant if a CD rotates at a constant speed? • Linear velocity • Linear acceleration • Angular acceleration • Angular displacement • All of the above

  7. Which of the following angles equals about 2 rad? • 360° • 180° • 0° • 3.14° • 114.6o

  8. A roller coaster has two loops of different radii. Which will have the greater centripetal force? • loop with greater radius • loop with smaller radius • both have the same • not enough information

  9. A roller coaster has two loops of different radii. What forces provide the centripetal force at the top of the loop? • Normal force • Gravitational force • Normal Force + Gravitational Force • Normal Force - Gravitational Force • Gravitational Force – Normal Force • Frictional Force

  10. A roller coaster has two loops of different radii. What forces provide the centripetal force at the bottom of the loop? • Normal force • Gravitational force • Normal Force + Gravitational Force • Normal Force - Gravitational Force • Gravitational Force – Normal Force • Frictional Force

  11. A roller coaster has two loops of different radii. What forces provide the centripetal force at the direct left of the loop? • Normal force • Gravitational force • Normal Force + Gravitational Force • Normal Force - Gravitational Force • Gravitational Force – Normal Force • Frictional Force

  12. Two adjacent lanes are curving. Which lane should you choose if you want to minimize the centripetal force? • inner lane • outer lane • both have same force • unable to be determined

  13. Two adjacent lanes are curving. If the lanes are horizontal, what provides the centripetal force? • Normal force • Gravitational force • Normal Force + Gravitational Force • Frictional Force

  14. Which will produce more torque? • 5N force exerted .2m from the axis • 10N force exerted .2m from the axis • 20N force exerted .01m from the axis • 5N force exerted .3m from the axis

  15. What is a way to increase the torque on an object? • Exert more force. • Exert the same force at a greater distance from the fulcrum. • Exert a lesser force at a greater distance from the fulcrum. • Both 1 and 2 are correct • All of the above

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