NEET2016PhysicsOscillationsActual
The angular amplitude of a simple pendulum is ₀ . The maximum tension in its string will be
Options
- Am g (1- ₀ )
- Bm g (1+ ₀ )
- Cm g (1- ₀^2 )
- 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