Pick a topic on the left, open a problem and check the solution hint by hint.
At what height $h$ above the Earth's surface does the acceleration due to gravity decrease by a factor of 4? The radius of the Earth is $R = 6400$ km.
Two bodies of mass $m_1 = 100$ kg and $m_2 = 200$ kg are at a distance $r = 2$ m from each other. Find the gravitational force of attraction between them. The gravitational constant is $G = 6.67 \cdot 10^{-11}$ N·m²/kg².