Question
A body is moving under radial force in an elliptical orbit. The farthest position of body from the source of force is twice as that of nearest position. If the velocity of body at farthest point is 20m/s, then find the velocity of body at nearest point.
Solution
The radial force exerts zero torque on the body.
Therefore angular momentum of body will remain conserve,
Therefore angular momentum of body will remain conserve,
