Simple Harmonic Motion - position

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Homework Statement



A 100 g ball attached to a spring with spring constant 2.9 oscillates horizontally on a frictionless table. Its velocity is 20 cm/s when x = 4.8 cm.

What is the ball's maximum acceleration?
which I found to be amax= 180 cm/s^2

What is the ball's position when the acceleration is maximum?

Homework Equations



x(t)= Acos(ωt)
x(t)= Acos(2pift)

The Attempt at a Solution


 
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