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A particle of mass \( \mathrm{m} \) moves along a circular path of radius \( r \) with a centripetal acceleration \( a_{n} \)
\( \mathrm{P} \) changing with time \( t \) as \( a_{n}=k t^{2} \), where \( k \) is a

W positive constant. The average power developed by all the forces acting on the particle during the first \( t_{0} \) seconds is
(1) \( \mathrm{mkrt}_{0} \)
(2) \( \frac{\mathrm{mkrt}_{0}}{2} \)
(3) \( \frac{\mathrm{mkrt}_{0}}{3} \)
(4) \( \frac{\mathrm{mkrt}_{0}}{4} \)
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