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A mass of 60.0 g, attached to a weightless spring with a force constant of 40.0...

A mass of 60.0 g, attached to a weightless spring with a force constant of 40.0 N / m, vibrates at an amplitude of 5.00 cm on a horizontal, frictionless plane.
(a) The total energy of the vibrating system,
(b) the velocity of the mass when the displacement is 2.00 cm.
Find.
When the displacement is 2.50 cm,
(c) kinetic energy and
(d) potential energy
Find.

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