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Mathematics 11 Online
OpenStudy (anonymous):

If the work required to stretch a spring 3 feet beyond its natural length is 17 foot-pounds, how much work is needed to stretch it 20 inches beyond its natural length? Your answer must include the correct units.

OpenStudy (anonymous):

20 in * 1ft/12 in = 1.66666... ft 1.6666... ft / 3 ft = 5/9 5/9 * 17 ft / pound = 9.4444... or 85/9 ft/ pound ft/ pound is the units I think you mean by foot-pounds

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