why does a satellite going around the earth in a circular path does no work
Answers
Answer:
No work is done by the gravitational force of earth acting on a satellite moving around it in a circular path because the gravity is always pointing towards the center of the earth which provides the centripetal force required for circular motion and the satellite is going tangentially, the angle between is 90 degrees.
Explanation:
If the direction of force is perpendicular to displacement, then the work done is zero. When a satellite moves around the Earth, then the direction of the force of gravity on the satellite is perpendicular to its displacement. Hence, the work done on the satellite by the Earth is zero.
The gravitational force changes the speed of a satellite in elliptical orbit because there is a component of the force in the direction of the satellite's motion. ... The force of gravity does no work on a satellite in circular orbit since the force is always perpendicular to the planet's direction of motion.
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