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Back to 10.7 Newton’s Second Law for Rotation

10.7 Exercise 5

Avg difficulty 2.5

Suppose you exert a force of 180 N tangential to a 0.280-m-radius, 75.0-kg grindstone (a solid disk). (a)What torque is exerted? (b) What is the angular acceleration assuming negligible opposing friction? (c) What is the angular acceleration if there is an opposing frictional force of 20.0 N exerted 1.50 cm from the axis?

OpenStax University Physics Volume 1, 10.7 Newton’s Second Law for Rotation, exercise 5

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Adapted from University Physics Volume 1 © 2016 Rice University. Licensed under CC BY 4.0. Source: University Physics Volume 1. Imported at revision db44eb9.