Class/Course - Engineering Entrance

Subject - Physics

Chapter - Rotational Motion

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Q.1 A coin is placed on a horizontal platform which undergoes verticle simple harmonic motion of angular frequency ω. The amplitude of oscillation is gradually increased. The coin will leave contact with the platform for the first time
  at the mean position of the platform
  for an amplitude of g/ω2
  for an amplitude pf g22
  at the highest position of the platform