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fernancb
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Homework Statement
A 0.222 kg shoe is dropped onto a vertically oriented spring with a spring constant of 101 N/m. The shoe becomes attached to the spring upon contact, and the spring is compressed 0.110 m before coming momentarily to rest.
What work is performed by the weight of the shoe while the spring is being compressed? = 0.239 J
What work is done by the spring force? = 0.611 J
Here is my problem:
At what speed is the shoe traveling just before it hits the spring?
Homework Equations
Ek = 0.5 mv^2
W = Fd
W = E
The Attempt at a Solution
W = Ek
= 1/2 mv^2
0.239 = 1/2 (0.222)v^2
v = 1.47 m/s
What am I doing wrong?