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Question: Answered & Verified by Expert
A child swinging on a swing in sitting position, stands up, then the time period of the swing will
PhysicsOscillationsJEE MainJEE Main 2002
Options:
  • A
    increase
  • B
    decrease
  • C
    remains same
  • D
    increases if the child is tall and decreases if the child is short
Solution:
1331 Upvotes Verified Answer
The correct answer is:
decrease
$\mathrm{T}=2 \pi \sqrt{\mathrm{l}_{\mathrm{eff}} / 8} ;
\mathrm{l}_{\mathrm{eff}}$ decreases when the child stands up.

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