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With what velocity would a shell have...

With what velocity would a shell have to be projected horizontally so that it might describle a circular orbit round the earth ? Acceleration due to gravity = ` 9.81 m s^(-2)` and radius of the earth = ` 6.4 xx 10 ^(6) m.`

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The correct Answer is:
`7.9 xx 10^(3) ms^(-1)`
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NN GHOSH-GRAVITATION-EXERCISE
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  2. With what velocity would a shell have to be projected horizontal...

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  3. With what velocity must a body be projected vertically upwards from...

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  4. Compare the minimum velocity with which a particle must be...

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