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NEET2018PhysicsOscillationsActual

Assertion : In simple harmonic motion, kinetic energy and potential energy become equal when the displacement is (1 / 2 ) times the amplitude. Reason : In simple harmonic motion, kinetic energy is zero when potential energy is maximum.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion.
  2. BIf both assertion and reason are true but reason is not the correct explanation of assertion.
  3. CIf assertion is true but reason is false.
  4. DIf both assertion and reason are false.

Correct answer

B. If both assertion and reason are true but reason is not the correct explanation of assertion.

Step-by-step solution

In simple hermonic motion, if PE = KE 1 2 m ^2 (x^2 )= 1 2 m ^2 (A^2-x^2 ) or x^2=A^2-x^2 or x=A / 2 Also, PE + KE = constant, if PE is maximum then KE is zero.

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