Question

What is the gravitational force of attraction between two bodies of masses 1500kg and 8500kg which are 2.6km apart?

Answer 1

The force of attraction is `12.58*10^-11 N`.

Explanation:

Use Newton's Law of Universal Gravitation.

`F = G*(m_1*m_2)/r^2`

G is the constant of Universal Gravitation: `6.67*10^-11 (N*kg^2)/m^2`.

Plugging the data in

`F = 6.67*10^-11 (N*cancel(m^2))/cancel("kg"^2) * (1.5*10^3 cancel(kg)*8.5*10^3 cancel(kg))/((2.6*10^3 cancel(m))^2)`

`F = 12.58*10^-11 N`