Write a short note on the earth's gravitational force.

Explanation

The earth attracts every object towards it because of the gravitational force. As the earth's centre of mass is at its centre, the gravitational force exerted by the earth on any object is always directed towards the earth's centre. Hence, an object released from a point above the earth's surface falls vertically downward towards teh earth. If n object is thrown vertically upward. it svelocity geos on decreasing due to the earth's gravitational force on the object. At one stage, the velocity of the body becomes zero and later the body falls back to the earth.