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KCET2023PhysicsGravitation

When a planet revolves around the Sun, in general, for the planet

Options

  1. Alinear momentum and linear velocity are constant.
  2. Blinear momentum and areal velocity are constant.
  3. Ckinetic and potential energy of the planet are constant.
  4. Dangular momentum about the Sun and areal velocity of the planet are constant.

Correct answer

D. angular momentum about the Sun and areal velocity of the planet are constant.

Step-by-step solution

When a planet revolves around the sun, net external torque is zero. Therefore its angular momentum is conserved. As a consequence, its areal velotity remains the same/constant.

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