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. A spring has a natural length of 20 cm. If a 25-dyne force is required to keep it stretched to a length of 25 cm, how much work is required to stretch it from 25 cm to 30 cm?

. A spring has a natural length of 20 cm. If a 25-dyne force is required to keep it stretched to a length of 25 cm, how much work is required to stretch it from 25 cm to 30 cm?

Glencoe Physics: Principles and Problems, Student Edition
Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter10: Work, Energy And Machines
Section: Chapter Questions
Problem 89A
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1. A spring has a natural length of 20 cm. If a 25-dyne force is required to keep it stretched to a length of 25
cm, how much work is required to stretch it from 25 cm to 30 cm?
2. A spring has a natural length of 15 ft. A force of 300 lb compresses the spring to 12 ft. Find the work done
in compressing the spring from 13 ft to 10 ft.

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