A simple pendulum of length l has maximu...

A simple pendulum of length `l` has maximum angular displacement `theta` . Then maximum kinetic energy of a bob of mass `m` is

`mglsintheta`

`mgl(1+sintheta)`

`mgl(1+costheta)`

`mgl(1-costheta)`

Text Solution

Verified by Experts

The correct Answer is:

`h=l-l cos theta`
`=l(1-costheta)`
According to law of conservation
`KE=PE=mg" "h`
`implies KE=mgl(1-costheta)`.

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