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  3. A tunnel is dug along diameter inside the surface of earth and a particle is projected from the centre of tunnel.

. A tunnel is dug along diameter inside the surface of earth and a particle is projected from the centre of tunnel.

A tunnel is dug along diameter inside the surface of earth and a particle is projected from the centre of tunnel. The minimum velocity of particle such that it escape out from the earth’s gravitation field is (Radius of earth = Re)

a tunnel is dug along diameter

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a tunnel is dug along

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