Questions
Energy required to transfer a 400 kg satellite in a circular orbit of radius 2R to a circular orbit of radius R, where R is the radius of the earth :
[Given : g = 9.8 ms-2 ,R = 6.4 x 106m]
a
1.65 x 109 J
b
3.13 x 109 J
c
6.26 x 109 J
d
4.80 x 109 J
detailed solution
Correct option is B
Energy required =−GMem2(4R)−−GMem2(2R)=GMemR14−18=mgR18=400×9.8×6.4×1068=3.13×109JTalk to our academic expert!
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