For a spherical planetary body, the gravitational field depends on its mass and radius. The strength of the gravitational field determines the acceleration due to gravity of freely falling objects at the planet's surface. At the surface of the Earth, for example, the acceleration due to gravity is gEarth = 9.8 m/s2.The Moon has a smaller mass and a smaller radius. The net result is that the acceleration due to gravity is gMoon = 1.6 m/s2.A metal block (12 kg on Earth) is taken to the Moon.
The block is dropped from a height of 2 m to the surface of the Moon. How long does it take to drop to the surface?