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A mass of 6xx10^(24) kg is to be compres...

A mass of `6xx10^(24) kg` is to be compressed in a sphere in such a way that the escape velocity from its surface is `3xx10^(8) m//s`. Find the radius of the sphere (in `mm`).

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The correct Answer is:
`[8.893 mm]`
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PHYSICS GALAXY - ASHISH ARORA-GRAVITATION-Particle Exercise
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  7. A planet of mass M moves around the Sun along an ellipse so that its m...

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  8. Suppose we have made a model of the Solar system scaled down in the ra...

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  11. A cosmic body A moves to the sun with velocity v(0)(when far from the ...

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  13. If a planet revolve around the sun in an elliptical orbit such that it...

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  14. For a low altitude orbit if r ~= r(p), where r(p) is planet radius, sh...

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  15. What should be the orbit radius of a communication satellite that it c...

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  16. The radius of a planet is R1 and a satellite revolves round it in a ci...

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  17. The small dense stars rotate about their common centre of mass as a bi...

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  18. An artificial satellite is moving in a circular orbit around the earth...

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  19. A particle is projected from point A, that is at a distance 4R form th...

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  20. A mass of 6xx10^(24) kg is to be compressed in a sphere in such a way ...

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