A spring with spring constant $11\mathrm{.}9$ 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 $5\mathrm{.}50$ cmcm and released. The ball makes $20\mathrm{.}0$ oscillations in $19\mathrm{.}0$ seconds.

Part A

What is the mass of the ball?

Express your answer with the appropriate units.

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Part B

What is the maximum speed?

Express your answer with the appropriate units.