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JEE Main2002PhysicsOscillationsActual

A child swinging on a swing in sitting position, stands up, then the time period of the swing will

Options

  1. Aincrease
  2. Bdecrease
  3. Cremains same
  4. Dincreases if the child is tall and decreases if the child is short

Correct answer

B. decrease

Step-by-step solution

T =2 l _ eff / 8 ; l _ eff decreases when the child stands up.

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