5th Edition

ISBN: 8220103026918

Author: Walker

Publisher: PEARSON

Concept explainers

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.

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Textbook Question

Chapter 11, Problem 51PCE

Predict/Explain A student rotates on a frictionless piano stool with his arms outstretched a heavy weight in each hand Suddenly he lets go of the weights, and they fall to the floor As a result does the student’s angular speed increase, decrease or stay the same? (b) Choose the best explanation from among the following:

I. The loss of angular momentum when the weights are dropped causes the student to rotate more slowly.
II. The student s moment of inertia is decreased by dropping the weights
III. Dropping the weights exerts no torque on the student, but the floor exerts a torque on the weights when they land.

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Chapter 11, Problem 50PCE

Chapter 11, Problem 52PCE

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Chapter 11 Solutions

EBK PHYSICS

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