Question

If F=Gm1m2÷d^2
Then d =3d
Then F=?

Answer 1

$F = \frac{Gm_1m_2}{d^2}$

If d = 3d,

$F_{new} = \frac{Gm_1m_2}{(3d)^2}$

$F_{new} = \frac{Gm_1m_2}{9d^2}$

$F_{new} = \frac{1}{9}\frac{Gm_1m_2}{d^2}$

$F_{new} = \frac{1}{9}F$

Answer 2

Hey dear,
Your question is quite scrambled. I'll try to solve this.

● Complete question should be -
Gravitational force between two masses m1 & m2 at distance d ia F. Find gravitational force between the masses when distance is 3d ?

● Answer -
F' = F/9

● Explanation -
Gravitational force is given by formula -
F = Gm1m2/d^2

When distance is 3d, resultant gravitational force is calculated by -
F' = Gm1m2 / (3d)^2
F' = (Gm1m2/d^2) / 9
F' = F/9

Hope this helps you...