Question

define Newton's law of gravitation what will be the change in the force of mass of object is doubled and radius of the planet is doubled

Answer 1

Every object in the universe attracts every other object with the force which is proportional the the product of their masses and inversely proportional the the square of the distance between them.

Answer 2

Every body in the universe attract each other with force which is directly proportional to product of their masses and inversely proportional to square of distance between them
F=Gm`m/r^2
A/Q
F=G2*2/(2)^2
F=G4/4
=G1
FORCE WILL remain unchanged