Gravitation Question 295

Question: a planet in elliptical orbit around the sun 5’. Where is the kinetic energy of the planet maximum?

Options:

A) $ [P_{1}] $

B) $ [P_{2}] $

C) $ [P_{3}] $

D) $ [P_{4}] $

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Answer:

Correct Answer: D

Solution:

  • Angular momentum of the planet about S is conserved.

    So, $[mvr=]$ constant. $ [v] $ is maximum when r is minimum.

    So, v is maximum at point$ [P_{4}] $ . Hence K.E. is maximum at$ [P_{4}] $ .



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