A 39.0-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 352 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)

A 39.0-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 352 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)

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter6: Applications Of Newton’s Laws Of Motion

Section: Chapter Questions

Problem 10PQ: A makeshift sign hangs by a wire that is extended over an ideal pulley and is wrapped around a large...

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Concept explainers

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.

Question

A 39.0-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 352 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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