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NEET2016PhysicsOscillationsActual

The angular amplitude of a simple pendulum is ₀ . The maximum tension in its string will be

Options

  1. Am g (1- ₀ )
  2. Bm g (1+ ₀ )
  3. Cm g (1- ₀^2 )
  4. Dm g (1+ ₀^2 )

Correct answer

D. m g (1+ ₀^2 )

Step-by-step solution

Maximum tension in the string is aligned & T_ =m g+ m v^2 l & =m g+ 2 m g l l (1- ₀ ) & =m g+2 m g (1-1+ ₀^2 2 ) ( since ₀ is small ) & =m g (1+ ₀^2 ) aligned

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