a A force of 100N is required to stretch a string that obeys Hooks law by 50cm. What is the work done in stretching the spring?

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asked Oct 12, 2023 141k views

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a A force of 100N is required to stretch a string that obeys Hooks law by 50cm. What is the work done in stretching the spring?

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Khaleal asked

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Answer:

$workdone \: in \: stretching \: a \: spring \: = (1)/(2)ke {}^(2) \\ workdone = (1)/(2)fe \\ beause \: f = ke \\ f = 1000 \: \: x = 50cm \: = 0.5m \\ w = (1)/(2) (100)(0 .5) { }^(2) \\w = 12.5 \: newtonpermetre$

Elim answered Oct 18, 2023

by Elim

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