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gokugreene
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I can't figure out what I did wrong on this test question.
A 4kg block is dropped from a height of 0.8m above a spring, k=120N/m. Find the maximum compression of the spring.
I have the PE at the top is equal to KE at the bottom.
PEtop=31.4J
KEbottom=31.4J
The potential energy in the spring when compressed should equal the KE at the bottom. Based upon that I should be able to find the maximum distance the spring will compress.
KEbottom=Wspring
31.4J=.5*120*x^2
Rearranging x=sqrt(2*31.4/120) and I get x=-0.723m
What am I doing wrong here? Can someone point it out.
Thanks, peace
A 4kg block is dropped from a height of 0.8m above a spring, k=120N/m. Find the maximum compression of the spring.
I have the PE at the top is equal to KE at the bottom.
PEtop=31.4J
KEbottom=31.4J
The potential energy in the spring when compressed should equal the KE at the bottom. Based upon that I should be able to find the maximum distance the spring will compress.
KEbottom=Wspring
31.4J=.5*120*x^2
Rearranging x=sqrt(2*31.4/120) and I get x=-0.723m
What am I doing wrong here? Can someone point it out.
Thanks, peace