Answered: A stationary wheel starts to rotate by…

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter10: Rotational Motion And Angular Momentum

Section: Chapter Questions

Problem 24PE: Calculate the rotational kinetic energy in the motorcycle wheel (Figure 10.38) if its angular...

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34 -

A stationary wheel starts to rotate by accelerating with constant angular acceleration and reaches an angular velocity of 90 rpm after 10s. How many cycles did he make during this time?

a)	7.5 cycles

B)	2.5 cycles

NS)

5 cycles

10 cycles

TO)	12.5 cycles

Definition Definition Rate of change of angular velocity. Angular acceleration indicates how fast the angular velocity changes over time. It is a vector quantity and has both magnitude and direction. Magnitude is represented by the length of the vector and direction is represented by the right-hand thumb rule. An angular acceleration vector will be always perpendicular to the plane of rotation. Angular acceleration is generally denoted by the Greek letter α and its SI unit is rad/s 2 .

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