Question

calculate the force of gravitation between two dust particle of masses 1mg and 1kg separated by 1cm​

Answer 1

Explanation:

Given : m

1

=m

2

=1 kg, r=1 m

Force of gravitation F=

r

2

Gm

m

2

F=

1

2

6.67×10

−11

×1×1

=6.67×10

−11

N

Answer 2

F=GmM/r^2

=6.673*10^-12(1*10^-6)(1)/(1*10^-2)^2

=6.673*10^-14N

Given

M=1kg

m=1mg=0.000001kg=1*10^-6kg

r=1cm=1*10^-2m

To Find

F=?

As we know the value of G=6.673*10^-12Nm^2/kg^2.

therefore by applying these values we get

F=6.673*10^-14N