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A planet is revolving around the sun as ...

A planet is revolving around the sun as shown in elliptical path. The correct option is

A

(a)its total energy is negative at all points on its trajectory

B

(b)linear momentum of the planet is not conserved.

C

(c)net torque on planet about sun is zero.

D

(d) all of these

Text Solution

Verified by Experts

The correct Answer is:
A, B, C
For (A): for bounded system the total energy is always negative.
For (B): for centrel force field, angular momentum is always conserved
For (C): for central force field torque `=0`
for (D): in presence of external force, linear momentum is conserved.
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