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MHT CET202013 Oct 2020Evening ShiftPhysicsOscillationsActual

A pendulum is oscillating with frequency 'n' on the surface of earth. If it is taken to depth R 2 below the surface of earth where R is radius of earth. New frequency of oscillations at depth R 2 is

Options

  1. An 2
  2. Bn
  3. Cn 3
  4. D2 n

Correct answer

A. n 2

Step-by-step solution

aligned T=2 l g T^ &=2 1 g^ &=2 1 g / 2 T^ &= 2 T n^ &= n 2 aligned n=1 / T aligned g^ &=g(1-d / R) &=g (1- R / 2 R ) &=g / 2 aligned

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