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A rocket is fired vertically with a spee...

A rocket is fired vertically with a speed of 5 km `s^(-1)` from the earth’s surface. How far from the earth does the rocket go before returning to the earth ? Mass of the earth = `6.0 x× 10^(24)` kg, mean radius of the earth = `6.4 xx 10^(6) m , G = 6.67 xx 10^(-11) " N "m^(2) kg^(-2)`.

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`8.0 xx 10^(6)` m from the earth.s centre
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  14. A body weighs 63 N on the surface of the earth. What is the gravitatio...

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  15. Assuming the earth to be a sphere of uniform mass density, how much wo...

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  17. The escape speed of a projectile on the earth’s surface is 11.2 km s^(...

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  18. A satellite orbits the earth at a height of 400 km above the surface. ...

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