physics help I am very confused

Question

2 kg object is spun around in a circle of radius 0.5m with a period of 5.0s

A. what is the frequency of its rotation

B. if the object's velocity is 0.63m/s, what is the acceleration?

C. what is the net force acting on it?

A 500 kg mass is spun in a circle of radius 25 m with a velocity of 250m/s.

A. what is the frequency if the mass spins with a period of 0.63s?

B. what is its Acceleration?

C. what is the net force acting on it?

Answer 1