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JEE Main201911 Jan 2019Morning ShiftPhysicsOscillationsActual

A particle undergoing simple harmonic motion has time dependent displacement given by x(t)= A t 90 . The ratio of kinetic to potential energy of this particle at t =210 ~s will be

Options

  1. A1 9
  2. B1
  3. C2
  4. D1 3

Correct answer

D. 1 3

Step-by-step solution

Kinetic energy, k = 1 2 ~m ² ~A ² ² t Potential energy, U= 1 2 m ² A² ² t k U = ² t= ² 90 (210)= 1 3

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