Satellite A moves in a circular orbit of radius around a planet of mass
PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
Satellite A moves in a circular orbit of radius 4R around a planet of mass M. Satellite B moves in an elliptical orbit with perigee distance 2R and apogee distance 8R. When Satellite B is at the point in its orbit that is 4R from the planet’s center, how does its kinetic energy KB compare with the kinetic energy KA of Satellite A?
(a) KB=KA
(b) There is insufficient information to compare KB and KA.
(c) KB>KA
(d) KB<KA