Question

when the earth is revolving around the sun, the gravitational work done by the sun on the earth for more complete revolution is always
a. cannot be determined
b. positive
c. negative
d. zero​

Answer 1

zero is the right answer

Answer 2

Answer:

The gravitational force of the Sun acting on the Earth is directed along the radius of orbit and the displacement along the orbit is tangential to the force. Hence W = 0 and so no work is done when the Earth orbits the Sun.

Explanation:

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