The maximum potential energy of a block executing simple harmonic motion is 25 J. A is amplitude of oscillation. At A/2, the kinetic energy of the block is:
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The maximum potential energy of a block executing simple harmonic motion is 25 J. A is amplitude of oscillation. At A/2, the kinetic energy of the block is:

G1 Physics · Accepted Answer

Total energy E = 25 J. At x = A/2, potential energy U = E(x²/A²) = 25/4 J. Hence K = E−U = 25−6.25 = 18.75 J.