Question

The earth is acted upon by gravitation of sun, even though it does not fall into the sun. Why?

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Answer 1

Explanation:

THE EARTH IS ACTED UPON BY THE GRAVITATION OF SUN EVEN THOUGH IT DOESN'T FALL INTO THE SUN, THIS IS DUE TO THE EFFECT OF EARTH'S GRAVITATIONAL FORCE.

Earth does not fall into Sun because earth keeps revolving around Sun. This creates a centripetal force that pulls earth away from the Sun. When this force is equal the gravitational attraction, earth becomes stable.

Answer 2

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• Weight is inversely proportional to the square of radius. Therefore, when radius R of the earth becomes twice of its present radius, our weight become 1/4 of its present value.

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