Question

What happens to the force between two objects, if

(i) the mass of one object is doubled?
(ii) the distance between the objects is doubled and tripled?
(iii) the masses of both objects are doubled?

NCERT Class IX
Sciences - Main Course Book

Chapter 10. Gravitation

Answer 1

Newtons' law for Gravitational force  F = G M1 M2 / d²
      M1 and M2 are masses of two bodies and d is the distance between them.

1) As Force is directly proportional to the mass of each object, the force will be doubled.

2)  d is doubled,  Force will become 1/4th  as Force is inversely proportional to the square of distance.
     d is tripled.  Force will become 1/9th as force is inversely proportional to the square of d.

3)  four times.

Answer 2

Answer:

I) The force will also be doubled

II) The force will be half (1/2)

III) The force will be (1/3)

Explanation:

I) F=2(F)

II) F=1/2(F)

III) F=1/3(F)