Question

The gravitational force between two objects is 100 n. how should the distance between the objects be changed so that the force between them becomes

a.25n b)400n?

Answer 1

A . take Fg = GMm\d^2 = 100n

   Fg = G Mm\d^2

   Fg = G Mm\(2d)^2

   Fg = G Mm\4d^2

   Therefore, Fg = 25n

B.  

   Fg = G 4Mm\d^2

   Fg = G 4Mm\d^2

   therefore, Fg = 400n