An artificial satellite moving in a circular orbit around the earth has total energy E (kinetic energy + potential energy). Its potential energy is given by

2 E

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\frac{E}{2}

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\frac{E}{4}

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Data insufficient

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Solution

The correct option is A $2 E$
Potential energy $U = - \frac{G M m}{r}$
Total energy $E = - \frac{G M m}{2 r}$
Hence, potential energy $= 2 \times$ total energy
Potential energy $= 2 E$

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