NilaNgantone NilaNgantone

02-11-2016
Mathematics

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A spring has a natural length of 25 meters. A force of 12 newtons is required to stretch the spring to a length of 30 meters. How much work is done to stretch the spring from it's natural length to 40 meters?

Respuesta :

02-11-2016

F = ks
12 = k(15)

12/15 = k

integrating from 0 to 15
12/15 sds

12/15 x S squared / 2 from 0 to 15

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