A planet is moving in an elliptical orbit around the sun. The work done on the planet by the
gravitational force of the sun
(i) is zero in no part of the motion.
(ii) is zero in some parts of the orbit.
(iii) is zero in one complete revolution.
(iv) is zero in any small part of the orbit. Which of the following is true?
Text Solution
Verified by ExpertsThe correct answer is:
B
As gravitational force is conservative so work in complete cycle is zero because of no net
displacement. as 
. 
. So when 
work is zero.
So, option will be the best choice.
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