Two iron spheres separated by some distance have a minute gravitational attraction,

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

35. Two iron spheres separated by some distance have a minute gravitational attraction,

F

. If the spheres are moved to one half their original separation and allowed to rust so that the mass of each sphere increases

41 \%

, what would be the resulting gravitational force? (A)

2 F

(B)

4 F

(C)

6 F

(D)

8 F