The minimum and maximum distances of a planet revolving around sun are r and R. If the minimum speed of planet on its trajectory is v0, its maximum speed will be:-


a) v0R/r
b) v0r/R
c) v0R2/r2
d) v0r2/R2

Dear Student,
Please find below the solution to the asked query:

According to Kelper's second law of planetary motion:

v1v2= r2r1Therfore, if vm is the maximum speed. Then,v0vm = Rrvm = rR×v0

Thus, (b) is the correct option.


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Satyendra Singh

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