Physics - Gravitation Question with Solution | TestHub

When two satellites of earth are moving in same orbit, then time period of both are equal. From Kepler's third law $$T^2\propto r^3$$ Time period is independent of mass, hence their time periods will be equal. The potential energy and kinetic energy are mass dependent, hence the PE and $\mathrm{KE}$ of satellites are not equal. But, if they are orbiting in a same orbit, then they have equal orbital speed.