Questions
When a satellite is orbitting round a planet in circular orbit, workdone by the gravitational force acting on the satellite is
a
zero on completing one revolution only
b
zero always
c
infinite
d
negative
detailed solution
Correct option is B
Gravitational force of attraction of a planet on a satellite moving in circular orbit around the planet is radially inward and the direction of velocity of the satellite is along the tangent. So rate of work done on the satellite = = Fg V cos 900 = 0Hence option - (2) is right.Talk to our academic expert!
Similar Questions
If there were a small alteration in gravitational force, then which of the following forces do you think would alter in some respect
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