A (30-mathrm{kg}) solid sphere of radius (0.12 mathrm{~m}) is rolling without slipping on a horizontal surface at

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A $30-\mathrm{kg}$ solid sphere of radius $0.12 \mathrm{~m}$ is rolling without slipping on a horizontal surface at $2.0 \mathrm{~m} / \mathrm{s}$.

(a) What average torque is required to stop the sphere in $5.0 \mathrm{rev}$ without inducing skidding?

(b) If this torque is caused by a soft braking bumper that is lowered down until it just makes contact with the top of the sphere, what is the magnitude of the frictional force between bumper and sphere?

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Principles And Practice Of Physics

ISBN: 9780135610862

2nd Edition

Authors: Eric Mazur

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Question Posted: Apr 04, 2024 06:01 AM

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A (30-mathrm{kg}) solid sphere of radius (0.12 mathrm{~m}) is rolling without slipping on a horizontal surface at

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Step by Step Answer:

a To stop the sphere without inducing skidding we need to apply a torque that will decelerate the rotation of the sphere while keeping its linear velocity constant The angular deceleration of the sphe...View the full answer

Principles And Practice Of Physics

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