The centrifugal force, C, of a body moving in a circle varie

The centrifugal force, C, of a body moving in a circle varies jointly with theradius of the circular path, r, and the body’s mass, m, and inversely with thesquare of the time, t, it takes to move about one full circle. A 6-gram bodymoving in a circle with radius 100 centimeters at a rate of 1 revolution in 2seconds has a centrifugal force of 6000dynes. Find the centrifugal force of an18-gram body moving in a circle with radius 100 centimeters at a rate of 1revolution in 3 seconds.