Whats The Work Done On the Earth By gravity and SUN????

Asked by  | 3rd Jan, 2013, 07:05: PM

Expert Answer:

Work is said to be done when a force produces a displacement in the body and acts in any direction except perpendicular to the direction of displacement.

Work = Force×Displacement

When a body moves up, work is done against the gravity.

When the displacement is perpendicular to the gravitational force(force acting in downward direction), then the work done by the gravitational force is said to be zero. For example:- As an object moves on the earth(horizontal plane), then work done by the gravity is zero.

 

Answered by  | 3rd Jan, 2013, 10:39: PM

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