PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
Two identical spheres, each of mass m, are separated by a distance r and attract each other with gravitational force F. What is the new force between the spheres if each mass is tripled and the separation is doubled?
(a) 4.50F
(b) 2.25F
(c) 0.75F
(d) 1.50F