Answer to Question #280332 in Physics for mochi

Question

1.) Two objects have masses of 300 kg and 500 kg. Their centers are separated by distance of 25 m. Find the gravitational attraction between them.

Answer 1

Given:

$m_1=300\:\rm kg$

$m_2=500\:\rm kg$

$r=25\:\rm m$

$G=6.67*10^{-11}\:\rm N\cdot m^2/kg^2$

The universal law of gravity says

$$F=G\frac{m_1m_2}{r^2}$$

$$F=6.67*10^{-11}\frac{300*500}{25^2}=1.6*10^{-8}\:\rm N$$