Homework Help: calculus

Posted by sam on Thursday, December 1, 2011 at 6:08pm.

A spring exerts a force of 4x lbs when it is compressed a distance of x feet. How much work is required to compress the spring a distance of one inch?

calculus - Chris, Friday, December 2, 2011 at 12:03am
The answer is 2

a = 0 (start of the spring)
b = 1

integrate 4x then plug in the limits (0 and 1)
calculus - Chris, Friday, December 2, 2011 at 8:37am
Correction its not 2. It's 1/72 ft lbs

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