A particle of mass m is at a distance d form one end of a uniform rod of length L and mass M. the gravitational force F on the particle due to the rod is:

Q: A particle of mass m is at a distance d form one end of a uniform rod of length L and mass M. the gravitational force F on the particle due to the rod is:

(a) $\frac{G M m}{d^2}$

(b) $\frac{G M m}{(d + L/2)^2}$

(c) $\frac{G M m}{(d + L)^2}$

(d) $\frac{G M m}{d(L + d)}$