Question: A particle of mass 𝑚 is moving in a circular path of constant radius 𝑟 such that its centripetal acceleration 𝑎𝑐 is varying with time 𝑡 as, 𝑎𝑐 = 𝑘 2 𝑟𝑡 2 , The power delivered to the particle by the forces acting on it is
(A) 2\pi mk^{2}r^{2}t
(B) mk^{2}r^{2}t
(C) \dfrac{mk^{4}r^{2}t^{5}}{3}
(D) Zero
Answer: option (B)
Solution:
