AP Physics C: Mechanics
7.4 Energy of Simple Harmonic Oscillators
A block of mass \(1.0\text{ kg}\) is attached to an ideal horizontal spring and undergoes simple harmonic motion on a frictionless surface. The total mechanical energy of the block-spring system is \(18\text{ J}\). What is the instantaneous speed of the block at a position where the elastic potential energy of the spring is equal to \(75\%\) of the total mechanical energy?
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