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MHT CET20227 Aug 2022Morning ShiftPhysicsGravitationActual

A planet is moving around the sun in an elliptical orbit at different positions A, B, C, D. The maximum rotational kinetic energy of a planet is at postion.

Options

  1. AD
  2. BB
  3. CA
  4. DC

Correct answer

D. C

Step-by-step solution

Concept: Angular momentum is always conserved as the torque (or forces) between sun and the planet is internal. L=m v r When a planet is closest to the sun ( r is minimum), it attains its highest orbital velocity ( v is maximum), thus attaining maximum Kinetic Energy. So, the K.E of the planet will be maximum at point C.

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