***So my question is why did my professor divide by 4 at the end of part b? Please explain and show work if possible.
At T/4 the velocity is maximum because the bob is at the lowest position of the pendulum when string makes 0 degree with vertical. At lowest position the gravitational potential energy is minimal and kinetic energy is maximum.
***So my question is why did my professor divide by 4 at the end of part...
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