A mother pushes her child on a swing so that his speed is 9.7 m/s at the lowest point of his path. The swing is attached to a point 2.05 m above the child’s center of mass when the swing is motionless.  What is the centripetal acceleration of the child at the low point in m/s2?  What is the magnitude of the force that the child exerts on the seat at the lowest point if his mass is 19.5 kg in N?

College Physics
10th Edition
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
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Chapter7: Rotational Motion And The Law Of Gravity
Section: Chapter Questions
Problem 14WUE
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 A mother pushes her child on a swing so that his speed is 9.7 m/s at the lowest point of his path. The swing is attached to a point 2.05 m above the child’s center of mass when the swing is motionless.


 What is the centripetal acceleration of the child at the low point in m/s2

What is the magnitude of the force that the child exerts on the seat at the lowest point if his mass is 19.5 kg in N? 

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