2. A pulley of 5 cm radius on a motor is turning at 30 rev/s and slows uniformly to 20 rev/s in 2 s. Find a. Angular acceleration of the motor. b. Number of revolutions it makes in this time. c. Length of belt it winds in this time.

2. A pulley of 5 cm radius on a motor is turning at 30 rev/s and slows uniformly to 20 rev/s in 2 s. Find a. Angular acceleration of the motor. b. Number of revolutions it makes in this time. c. Length of belt it winds in this time.

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 1PE: At its peak, a tornado is 60.0 m in diameter and carries 500 km/h winds. What is its angular...

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The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.

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2. A pulley of 5 cm radius on a motor is turning at 30 rev/s and
slows uniformly to 20 rev/s in 2 s. Find
a. Angular acceleration of the motor.
b. Number of revolutions it makes in this time.
c. Length of belt it winds in this time.

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