3. Ganymede is a moon of Jupiter. It has a mass of 1.48 x1023 kg and a radius of 2,634 km. a) What is the gravitational force felt by a 1 kg object on the surface of Ganymede? b) What is the free-fall acceleration of the 1-kg object? What is the free-fall acceleration of a wrench (m=2.80 kg) on Ganymede? c) An astronaut on Ganymede throws a wrench up to her partner who is standing on top of a small cliff nearby. The first astronaut throws the wrench with a speed of 8.50 m/s at an angle of 62° above horizontal. The base of the cliff is 26.0 m away from the first astronaut. The second astronaut catches the wrench right at the edge of the cliff. How tall is the cliff? (There is no air on Ganymede, so you can neglect air resistance.)
Gravitational force
In nature, every object is attracted by every other object. This phenomenon is called gravity. The force associated with gravity is called gravitational force. The gravitational force is the weakest force that exists in nature. The gravitational force is always attractive.
Acceleration Due to Gravity
In fundamental physics, gravity or gravitational force is the universal attractive force acting between all the matters that exist or exhibit. It is the weakest known force. Therefore no internal changes in an object occurs due to this force. On the other hand, it has control over the trajectories of bodies in the solar system and in the universe due to its vast scope and universal action. The free fall of objects on Earth and the motions of celestial bodies, according to Newton, are both determined by the same force. It was Newton who put forward that the moon is held by a strong attractive force exerted by the Earth which makes it revolve in a straight line. He was sure that this force is similar to the downward force which Earth exerts on all the objects on it.
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