Physics

Problem

Suppose the gravitational force varies inversely as the

n

th power of distance. Then the time period of a planet in a circular orbit of radius

R

around the sun will be proportional to: (A)

R^{(n+1)/2}

(B)

R^{(n-1)/2}

(C)

R^n

(D)

R^{(n-2)/2}