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JEE Main 2006
Exam
JEE Main
Year
2006
Subject
Physics
Chapter
Oscillations

JEE Main 2006 · Physics · Oscillations

A coin is placed on a horizontal platform which undergoes vertical...

A coin is placed on a horizontal platform which undergoes vertical simple harmonic motion of angular frequency ω\omega. The amplitude of oscillation is gradually increased. The coin will leave contact with the platform for the first time

Options

  1. Aat the highest position of the platform
  2. Bat the mean position of the platform
  3. Cfor an amplitude of gω2\frac{\mathrm{g}}{\omega^2}
  4. Dfor an amplitude of g2ω2\frac{\mathrm{g}^2}{\omega^2}

Correct answer

C. for an amplitude of gω2\frac{\mathrm{g}}{\omega^2}

Step-by-step solution

Aω2=gA \omega^2=g ⇒A=g/ω2\Rightarrow A=g / \omega^2
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