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

Question

Which of the following quantities remain constant in a planetory motion, when seen from the surface of the sun. (A) K.E (B) angular speed (C) speed (D) Angular momentum

Tardigrade Admin · Accepted Answer

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

Q. Which of the following quantities remain constant in a planetory motion, when seen from the surface of the sun.

K.E

angular speed

speed

Angular momentum

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