MCQ
Length of a simple pendulum is $l$ and its maximum angular displacement is $\theta$, then its maximum $K.E.$ is
- A$mgl\sin \theta $
- B$mgl(1 + \sin \theta )$
- C$mgl(1 + \cos \theta )$
- ✓$mgl(1 - \cos \theta )$
✓
Answer
Correct option: D.
$mgl(1 - \cos \theta )$
d
(d) Kinetic energy will be maximum at mean position.
From law of conservation of energy maximum kinetic energy at mean position = Potential energy at displaced position
==> ${K_{\max }} = mgh = mgl(1 - \cos \theta )$
(d) Kinetic energy will be maximum at mean position.
From law of conservation of energy maximum kinetic energy at mean position = Potential energy at displaced position
==> ${K_{\max }} = mgh = mgl(1 - \cos \theta )$
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