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A Force of 8 Dynes Is Required to Stretch a Spring

Question 9

Short Answer

A force of 8 dynes is required to stretch a spring from its natural length of 10 cm to a length of 15 cm. How much work is done
(a) in stretching the spring to a length of 25 cm?
(b) in stretching the spring from a length of 20 cm to a length of 25 cm?

Correct Answer:

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(a) 180 dy...

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