KCET · Physics · Gravitation
When a planet revolves around the Sun, in general, for the planet
- A linear momentum and linear velocity are constant.
- B linear momentum and areal velocity are constant.
- C kinetic and potential energy of the planet are constant.
- D angular momentum about the Sun and areal velocity of the planet are constant.
Answer & Solution
Correct Answer
(D) angular momentum about the Sun and areal velocity of the planet are constant.
Step-by-step Solution
Detailed explanation
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.
external torque is zero. Therefore its angular momentum is conserved. As a consequence, its areal velotity remains the same/constant.
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