A) speed
B) angular speed
C) kinetic energy
D) angular momentum
Correct Answer: D
Solution :
As force acting on planet is central in nature so torque acting on planet is zero about the satellite & hence its angular momentum remains constant. In elliptical orbit as planet revolves around the sun, the seperation between sun & planet changes & hence moment of inertia which in turn changes the angular velocity to keep angular momentum constant. \[K=\frac{{{L}^{2}}}{2I}\]as I changes, K also changes.You need to login to perform this action.
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