(a) Explanation Given info: The speed of the puck is v , the radius of the circle is r and the puck is pulled downward until the radius be r / 2 . The puck attached to a string on a horizontal, frictionless surface rotates about the hole which brings the puck closer to the hole. Here the puck is moving around a circle. Expression for the angular speed is, ω = v r (1) Here, ω is the angular speed. v is the velocity. r is the radius. For initial angular speed: Substitute v for v and r for r in above equation (b) To determine The final speed of the puck.

5th Edition

ISBN: 8220103026918

Author: Walker

Publisher: PEARSON

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Center of Gravity of a system

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Chapter 11, Problem 75GP

(a)

To determine

Whether the speed of the puck remains same or not.

(b)

To determine

The final speed of the puck.

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Chapter 11, Problem 74GP

Chapter 11, Problem 76GP

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Whether the speed of the puck remains same or not.

Solution Summary: The author explains the angular speed, velocity, and radius of the puck attached to a string and the moment of inertia.

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Whether the speed of the puck remains same or not.

The final speed of the puck.

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Chapter 11 Solutions