First slide

Gravitaional potential at a point

Question

The diagram showing the variation of gravitational potential of earth with distance from the centre of earth is

Moderate

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D

Solution

$V_{in} = \frac{- Gm}{2 R} [3 - {(\frac{r}{R})}^{2}], V_{surface} = \frac{- GM}{R}, V_{out} = \frac{- GM}{r}$

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