Year: 2015
Topic: Gravitation
Time :
1. A satellite S is moving in an elliptical orbit around the earth. The massof the satellite is very small compared to the mass of the earth. Then,
(1). the linear momentum of 5 remains constant in magnitude.
(2). the acceleration of S is always directed towards the centre of the earth.
(3). the angular momentum of S about the centre of the earth changes in direction, but its magnitude remains constant
(4). the total mechanical energy of S varies periodically with time.