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**1. Homework Statement**

A spring (spring constant=2500N/m) is fixed vertically to the floor. A 10-kg ball is placed on the spring, pushed down 0.5m, and released. How high does the ball fly above its release position?

**2. Homework Equations**

x=Xo cos wt

w= √(k/m)

T=2pi√(m/k)

**3. The Attempt at a Solution**

x=Xo cos(15.8)(0.397)

I have solved for the frequency and the period, but I don't know what values I should plug in for Xo and x.

That is as far as I could get, I have no idea how to solve for the amplitude (Xo), which appears to be the answer to the question. I'm pretty slow on physics, so sorry if this question seems elementary/stupid.

Thanks.

edit: I have not learned calculus yet, if that makes a difference when solving this question.

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