5. A 3.8 kg rock is whirled in a vertical circle with a 1.3m string. If the rock is travelling at 7.8m/s, determine the magnitude of the minimum force of tension between the string and rock. a. 1.3x10² N b. 1.4x10? N c. 1.5x10² N d. 1.610? N e. 1.7x10² N

5. A 3.8 kg rock is whirled in a vertical circle with a 1.3m string. If the rock is travelling at 7.8m/s, determine the magnitude of the minimum force of tension between the string and rock. a. 1.3x10² N b. 1.4x10? N c. 1.5x10² N d. 1.610? N e. 1.7x10² N

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter7: Rotational Motion And The Law Of Gravity

Section: Chapter Questions

Problem 9WUE: A man whirls a 0.20-kg piece of lead attached to the end of a string of length 0.500 m in a circular...

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Concept explainers

Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.

Question

5. A 3.8 kg rock is whirled in a vertical circle with a 1.3m string. If the rock is travelling at 7.8m/s,
determine the magnitude of the minimum force of tension between the string and rock.
а. 1.3х10? N
b. 1.4x102 N
с. 1.5х102 N
d.
1.6102 N
е. 1.7x102 N

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