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December 22, 2014

December 22, 2014

Posted by **seth** on Monday, November 28, 2011 at 9:19pm.

- calculus -
**Steve**, Tuesday, November 29, 2011 at 4:49amAssuming the whole cable is just hanging there, the work required to raise it up is

∫(175-x)(4dx)[0,175]

= 4(175x - .5x^2)[0,175]

= 700x - 2x^2[0,175]

= [700*175 - 2*175^2] - [0-0]

= 61250

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