What will happen to the motion of the planets around the sun if there is no gravitational force around them?
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In some parts of the orbit, force is perpendicular to the direction of motion. Hence, no work done when rotating in circular orbits. Also total amount of work in complete revolution is zero. Because when moving away the component of gravitational force is opposite to the direction of motion So, negative work is done. In some part positive work is done. As both are symmetrical. Total work done is zero.
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Gravity is the force that pulls Earth and stops it from going off in some other direction.” Without the sun's gravitational pull, Earth would move in a straight line away from the sun. ... If Earth left the sun's orbit, the moon would continue to revolve around Earth because of gravity.
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