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A 45.0-g object connected to a spring with a force constant of 30.0 N/m oscillates with an amplitude of 4.00 cm on a frictionless, horizontal surface.
(a) Find the total energy of the system.
______ mJ
(b) Find the speed of the object when its position is 1.25 cm. (Let 0 cm be the position of equilibrium.)
______ m/s
(c) Find the kinetic energy when its position is 2.50 cm.
(d) Find the potential energy when its position is 2.50 cm.
_______ mJ
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