Question: A particle of mass m moves along a circle of radius R. Find the modulus of the average vector of the force acting on the

A particle of mass m moves along a circle of radius R. Find the modulus of the average vector of the force acting on the particle over the distance equal to a quarter of the circle, if the particle moves
(a) Uniformly with velocity v;
(b) With constant tangential acceleration wτ, the initial velocity being equal to zero

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