An artificial satellite moving in a circular orbit around the earth has a total

Question

An artificial satellite moving in a circular orbit around the earth has a total (kinetic + potential) energy

E_{0}

. Its potential energy is

Options:

A . −E0

B . 1.5E0

C . 2E0

D . E0

Answer: Option C
:
C
Potential energy =

2 \times (T o t a l e n e r g y) = 2 E_{0}

Because we know =

U = \frac{- G M m}{r} a n d E_{0} = \frac{- G M m}{2 r}

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