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A spring with spring constant 20.0 N/mN/m hangs from the ceiling. A ball is suspended from...

A spring with spring constant 20.0 N/mN/m hangs from the ceiling. A ball is suspended from the spring and allowed to come to rest. It is then pulled down 9.50 cmcm and released. The ball makes 39.0 oscillations in 19.0 seconds.

A. What is the mass of the ball?

B.What is the maximum speed?

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