Question

If two satellites of different masses are revolving in the same orbit, they have the same

• A. angular momentum
• B. energy
• C. time period
• D. speed

Answer 1

Answer: (C), (D)

The correct options are
C time period
D speed

Orbital speed $v=\sqrt{\frac{GM}{r}}$ $T.E=-\frac{GMm}{2r}$

$T=2\pi \sqrt{\frac{r^3}{GM}}$ and $L=mvr$

where symbols have their usual meanings.

So $v$ and $T$ are same for the two satellites of different masses but revolving in same orbit.