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A 0.28 kg mass at the end of a spring oscillates 2.0 times per second with...

A 0.28 kg mass at the end of a spring oscillates 2.0 times per second with an amplitude of 0.15 m .

Determine the speed when it passes the equilibrium point.

Determine the speed when it is 0.12 m from equilibrium.

Determine the total energy of the system.

Determine the equation describing the motion of the mass, assuming that at t=0, x was a maximum.

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