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The maximum displacement from equilibrium is A and the total mechanical energy of the system is E. What is the system”s potential energy when its kinetic energy is equal to (3/4)E? 1 1 1 kA2 E = Energy of Harmonic Oscillators. Consider a harmonic oscillator at four different moments, labeled A, B, C, and D, as shown in the figure . Assume that the force constant k, the mass of the block, m, and the amplitude of vibrations, A, are given. Which moment corresponds to the maximum potential energy of the system? A Which moment corresponds to the minimum kinetic energy of the system? A If the kinetic energy of the block is increasing, the block must be moving toward equilibrium. Which moment corresponds to the maximum kinetic energy of the system? At which moment is K=U?

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