Question

Calculate the magnitude of a gravitational force between two object 400kg and 800kg separated by a distance of of 45m (take G =6.67 * 10^-11 Nm^2 kg^-2)

Answer 1

Answer:

Explanation:

The formula is

$F_g=\frac{Gm_1m_2}{r^2}$ and filling in:

$F_g=\frac{(6.67*10^{11})(400)(800)}{(45^2)}$ and multiply and divide all that out to get

$F_g=1.1*10^{-8}$  It should really only be 1 significant digit since 400 and 800 both have only 1 significant digit, but I used 2. It should be

$F_g=$ 1 × 10⁻⁸ N