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OpenStudy (anonymous):
Suppose that 2 Joules of work is needed to stretch a spring from its natural length of 39 cm to a length of 56 cm. How much work is needed to stretch it from 53 cm to 67 cm? Your answer must include the correct units.
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OpenStudy (anonymous):
Hint: work and length streched is directly proportional. Do you need further help?
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