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TNPSC Group-I 2021 · Question 17 of 148

If a simple pendulum with the mass of the bob as 'M' has a time period 'T', then if in the same pendulum another bob with mass 2M replaces the original bob, now the time period is (the string may be assumed massless)

Physics - Mechanics

  1. A2 T
  2. BT/2
  3. CTCorrect
  4. D3T/2

Answer: C. T

Explanation

The time period of a simple pendulum depends only on length and gravity, not on the mass of the bob - it remains T.

Source: TNPSC Group-I Prelims (held 3 Jan 2021) - official paper via examrace.com

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