College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Static and Kinetic Friction
Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.
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A 37.0-kg child swings in a swing supported by two chains, each 2.98 m long. The tension in each chain at the lowest point is 360 N. (a) Find the child's speed at the lowest point. m/s (b) Find the force exerted by the seat on the child at the lowest point. (Ignore the mass of the seat.) N (upward)
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Transcribed Image Text:A 37.0-kg child swings in a swing supported by two chains, each 2.98 m long. The tension in each chain at the lowest point is 360 N. (a) Find the child's speed at the lowest point. m/s (b) Find the force exerted by the seat on the child at the lowest point. (Ignore the mass of the seat.) N (upward)
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