A simple pendulum has a bob of mass m an...

A simple pendulum has a bob of mass `m` and swings with an angular amplitude `phi`. The tension in thread is `T`. At a certain time the string makes an angle `theta` with the vertical `(theta le phi)`

`T =mg cos theta` for all value of `theta`

`T = mg cos theta` for only `theta = phi`

`T=mg,"for" theta =cos^(-1)[(1)/(3)(2cos phi+1)]`

T will be larger for smaller values of `theta`

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