A point  `p` moves in counter - clockwise direction on a circular path as shown in the figure .
Channel: Doubtnut
Date: 2020-07-05

A point  `p` moves in counter - clockwise direction on a circular path as shown in the figure . The movement of 'p' is such that it sweeps out in the figure . The movement of 'p' is such that it sweeps out a length `s = t^(3) + 5 ` , where `s` is in metres and ` t` is in seconds . The radius of the path is `20 m` . The  acceleration of 'P' when ` t = 2 s` is nearly