Question

Briefly explain why newton pondered over the existence of gravitation

Answer 1

That is quite a question! Gravity is one of the most familiar forces of nature, but also one of the most resistant to a proper, complete, and satisfying explanation. Everyone knew all about gravity on Earth for as long as people knew about anything, but it took Newton to realize that this same force is what keeps the Moon in orbit around the Earth and the planets around the Sun, and was responsible for the tides. Newton's tremendous achievement, helped by the precise astronomical data and Kepler's inferences, describes gravity's behavior for most practical purposes, but fails to answer why there is gravity in the first place; it merely says that the strength of gravity depends on how much mass there is and how far away you ar

Answer 2

who is the popular story that one day when Newton was sitting under an apple tree and Apple fell on his head and this led him to think about the force of gravitation .As in all such legends ,this story is almost certainly not true in its details but the story contains element of what actually happened .probably the most correct version of the story is that Newton ,upon observing an apple fall from a tree ,began to think along the following lines :-
the following Apple is getting accelerated ;there must be a force acting on the apple . If the force can reach to the top of the highest level of the tree might it not reach even further ( all the way to moon ! ) . By such reasonings Newton came to the conclusion that any two objects in the universe exert gravitational attraction on each other. This force is directly proportional to the product of their masses and inversely proportional to square of the distance between them. The weight of an object is measure of the gravitational force exerted on the object by the earth .
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