Question

Two students are sitting 1.50 m apart. One student has a mass of 70.0 kg, and the other has a mass

of 52.0 kg. What is the gravitational force between them

Answer 1

The gravitational force between them can be found by the formula of Newton's law of universal gravitation:

$$F=G\dfrac {m_1m_2}{r^2}=1.08·10^{-7}\text{ N}.$$