A planet has two moons of equal mass. Moon 1 is in circular orbit of radius r. Moon 2 is in a circular orbit of radius 2r. What is the magnitude of the gravitational force exerted by the planet on Moon 2? a. Four times as large as that on Moon 1 b. Twice as large as that on Moon 1 c. Equal to that on Moon 1 d. Half as large as that on Moon 1 e. One fourth as large as that on Moon 1 Q2. Superman stands on a top of very tall mountain and throws a baseball horizontally with a speed such that the baseball goes into a circular orbit around the earth While the baseball is in the orbit, what is the magnitude of the acceleration of the ball? a. It depends on how fast the baseball is thrown b. It is zero because the ball does not fall to the ground c. It is slightly less than 9.80m/s^2 d. It is equal to 9.80m/s^2
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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