Posted by **rock** on Friday, February 4, 2011 at 9:21pm.

A 5.80 kg object on a horizontal frictionless surface is attached to a spring with spring constant 860 N/m. The object is displaced from equilibrium 50.0 cm horizontally and given an initial velocity of 9.9 m/s back toward the equilibrium position.

(a) What is the frequency of the motion?

units in Hz

(b) What is the initial potential energy of the block-spring system?

units in J

(c) What is the initial kinetic energy?

units in J

(d) What is the amplitude of the motion?

units in m

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