Posted by Carden on Thursday, April 29, 2010 at 8:27pm.
How can I possibly know why your answer is off? I have no idea what you did.
I did m1v1 /(m1+m2) = vf = .252723
x = vf(m/k)
x = .366
after getting vf, you need to calculate the KE of the putty/block, and set that equal to the compressed energy in the spring 1/2 k x^2, and solve for x.
I think you need a tutor, you appear to be totally lost.
x = v * sqrt(m/k)
correct?
No.
Set the KE of the putty/block, set it equal to the max stored energy of the spring, 1/2 k x^2
when I set 1/2mv2 equal to 1/2kx2
I got .366
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