Question

Gravitational force is a(n)? A) attractive force B) repulsive force C) both an attractive and repulsive force D) neither an attractive or repulsive force

Answer 1

Answer: In the case of gravity, mediated by spin 2 particles, charge is mass, which is always positive. Thus, q1q2 is always greater than zero, and gravity is always attractive. For spin 0 force mediators, however, there is no restriction on the charges and you can very well have repulsive forces.

Explanation: C) both an attractive and repulsive force is the answer