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Question

A string of length 1.5 m is tied to a stone of mass of 0.2 kg and is made to revolve at a speed of 1.2 m s1. What is the centripetal force experienced by the stone?

A
0.173 N
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B
0.192 N
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C
0.160 N
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D
0.123 N
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Solution

The correct option is B 0.192 N
Given:
Mass of the stone, m=0.2 kg
Length of the string, r=1.5 m
Speed of revolution, v=1.2 m s1
Centripetal force, F=mv2r=0.2×(1.2)21.5=0.2881.5
F=0.192 N

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