Two masses, m1 and m2 are separated by a distance, r. The force of attraction between the two masses is F. Show all work
A) If m1 increases by 9, how does F change?

B) If r is halved (1/2), how would F change?

C) If r is not changed but both masses increase by a factor 7, how would F change?

D) If both m1 and m2 remain unchanged, and r changes to 3/5 of the original distance, how would F change?

E) If all variables (r, m1 and m2) increase by 4, how would F change?