- #1
mathnoobie
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Homework Statement
Seven and one half foot pounds of work is required to compress a spring 2 inches from its natural length. Find the work required to compress the spring an additional one-half inch
Homework Equations
W=kd
W=∫f(x)dx
The Attempt at a Solution
7.5=W
∫kxdx from (0,1/6)
=(kx^(2))/2 from (0,1/6)
=k/72=7.5
K=540
∫(540x)dx from (4/24, 5/24)
The rest is just algebra that's irrelevant; did i set up the problem right?