The angular momentum of a planet of mass M moving around the sun in an elliptical orbit is L→ . The magnitude of the areal velocity of the planet is LnM.Find the value of n.
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a
4Lm
b
L2m
c
Lm
d
2Lm
answer is B.
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Detailed Solution
Assuming SAB a triangle dA=12VdtrAreal velocity momentum L=mvr ⇒vr=Lm ⇒dAdt=L2m