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Physics
Which of the following quantities remain constant in a planetory motion, when seen from the surface of the sun.
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Q. Which of the following quantities remain constant in a planetory motion, when seen from the surface of the sun.
COMEDK
COMEDK 2000
Gravitation
A
K.E
13%
B
angular speed
20%
C
speed
20%
D
Angular momentum
47%
Solution:
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).