what is the work done by force of gravity on satellite moving round the earth ? justify your answer
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Answer:
Work is said to be done when a force applied to an object moves that object. We can calculate work by multiplying the force by the movement of the object.
The work done on the satellite by the Earth is zero.
Explanation:
Work is done whenever the given two conditions are satisfied:
A force acts on the body.
There is a displacement of the body by applying force in or opposite the force’s direction.
If the direction of force is perpendicular to displacement, then the work done is zero. When a satellite moves around the Earth, then the force of gravity on the satellite is perpendicular to its displacement. Hence, the work done on the satellite by the Earth is zero.
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Answer:
W = Force * displacement (both vectors). Gravity acts towards the center of the earth. So if the satellite moves in a circular orbit with center of earth as the orbit center the work done at any point is zero, since the force and the displacement are perpendicular.
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