A point \( \mathrm{P} \) moves in counter-clockwise direction on a circular path as shown in the...
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0A point \( \mathrm{P} \) moves in counter-clockwise direction on a circular path as shown in the figure. The movement of \( \mathrm{P} \) is such that it sweeps out a length \( s=t^{3}+5 \), where \( s \) is in meters and \( t \) is in seconds. The radius of the path is \( 20 \mathrm{~m} \). The acceleration of \( \mathrm{P} \) when \( t=2 \mathrm{~s} \) is nearly
(A) \( 14 \mathrm{~m} / \mathrm{s}^{2} \)
(B) \( 13 \mathrm{~m} / \mathrm{s}^{2} \)
(C) \( 12 \mathrm{~m} / \mathrm{s}^{2} \)
(D) \( 7.2 \mathrm{~m} / \mathrm{s}^{2} \)
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