A man is swinging his child, Wii weighs 28.5 kilograms, in horizontal circle which has a radius of 0.75 meters and it takes the child 1.75 seconds to make one revolution. a) What is the magnitude and direction of the force the man exerts on his child? b) What is the magnitude and direction if the force adopted by the child on the man?

Answer 1

a. force=centripetal force=m*w^2*r
= 28.5*(2PI/1.75)^2*.75 Newtons

b. Wording makes no sense, but the force on the man is the equilibrant to the force the man exerts: equal in magnitude, opposite direction