A strong rod AB of negligible mass rotates without friction in a horizontal plane about the fixed point A. The length AB

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A strong rod AB of negligible mass rotates without friction in a
horizontal plane about the fixed point A. The length AB is 2 m. At
B it carries a mass of 1 kg. Seen from above, a counter clockwise
couple moment M = (3t^2) N·m acts at A and a force F = (5t) N acts
in a clockwise sense on the 1 kg mass, with t in seconds.
(a) Assuming motion starts from rest, calculate the speed of the
mass at any instant t s.
(b) Calculate the tangential force the rod exerts on the 1 kg
massa at instant t = 2 s.