GravitationHard
Question
A planet is revolving around the sun is an elliptical orbit as shown in figure. Select correct alternative(s)
Options
A.Its total energy is negative at D.
B.Its angular momentum is constant
C.Net torque on planet about sun is zero
D.Linear momentum of the planet is conserved
Solution
For (A) : For bounded system, the total energy is always negative.
For (B) : For central 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 not conserved.
For (B) : For central 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 not conserved.
Create a free account to view solution
View Solution FreeMore Gravitation Questions
Calculate the mass of the sun if the mean radius of the earth′s orbit is 1.5 × 108 km and G = 6.67 × 10-...Two bodies of masses m and 4 m are placed at a distance r. The gravitational potential at a point on the line joining th...Two spherical bodies of mass M and 5 M and radii R and 2 R are released in free space with initial separation between th...A geostationary satellite is orbiting the earth at a height of 5R above the surface of the earth, R beingthe radius of t...A planet is revolving around the Sun in an elliptical orbit. Its closest distance from the Sun is rmin. The farthest dis...