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Homework Statement
A 95kg basketball player slam dunks a basketball and hangs onto the rim. Find out how much the rim bends if its spring constant = 7400 N/m and the basketball rim is 2 m in the air.
Homework Equations
Ep = 0.5 k x^2
Ek = 0.5 m v^2
Eg = mgh
The Attempt at a Solution
The book got 0.15 m. My answer is way off, what did I do wrong? I think this should be right.
Ep1 + Ek1 + Eg1 = Ep2 + Ek2 + Eg2
Ep1 = 0, Ek1 = 0, Ek2 = 0
Eg1 = Ep2 + Eg2
mgh = (1/2)kx^2 + mg(2m - x)
1862 J = 3700x^2 N/m + 1862 J - 931x N
3700x^2 N/m - 931x N = 0
931x N( 3.97x / m - 1 ) = 0
x = 0 or 3.97x/m = 1
x = 1/(3.97/m) = 0.25 m.
Book got 0.15. My answer is way off and I'm not sure why it could be look this. Is my logic correct? Am I correct?
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