12. Rotational Kinematics
Rotational Position & Displacement
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- Multiple Choice
While you drive, your tires, all of radius 0.40 m, rotate 10,000 times. How far did you drive, in meters?
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An object moves a total distance of 1,000 m around a circle of radius 30 m. How many degrees does the object go through?
BONUS:How many complete revolutions does it make?
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A car travels a total of 2,000 m and 1140° around a circular path, starting from 0° . What is the radius of the circular path?
BONUS:How far (in degrees) from 0° does the car end up?
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FIGURE EX4.23 shows the angular-velocity-versus-time graph for a particle moving in a circle. How many revolutions does the object make during the first 4 s?
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(II) A child rolls a ball on a level floor 3.1 m to another child. If the ball makes 12.0 revolutions, what is its diameter?
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A child rolls a ball on a level floor 3.1 m to another child. If the ball makes 12.0 revolutions, what is its diameter?
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Which of the following is an example of rotational motion?
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(II) A small rubber wheel is used to drive a large pottery wheel. The two wheels are mounted so that their circular edges touch. The small wheel has a radius of 2.0 cm and accelerates at the rate of 6.8 rad/s², and it is in contact with the pottery wheel (radius 27.0 cm) without slipping. Calculate the time it takes the pottery wheel to reach its required speed of 65 rpm.
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