Question

Which of the following quantities remain constant in a planetary motion, when seen from the surface of the sun?

A

Kinetic energy

B

Angular speed

C

Speed

D

Angular momentum

Easy
Solution
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Correct option is D)

When viewed from the inertial frame of the sun, the planets seem to execute elliptical orbital motion with changing () (Kepler's first law) but constant angular momentum (due to the force being central).

Solve any question of Gravitation with:-
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