An artificial satellite moving in circular orbit around the earth has a total (kinetic + potential) energy E0. Its potential energy and kinetic energy respectively are
Answer & explanation
Correct answer: option 3
K.E. = $\frac{GMm}{2 r}=-E_0$, and P.E. = $-\frac{GMm}{r}=2 E_0$
⇒ T.E. = K.E. + P.E. = $-\frac{GMm}{2 r}=E_0$