A body weighs 250,N on surface of earth. ....... N will it weigh half way down to centre of earth .

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7.Gravitation

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A body weighs $250\,N$ on the surface of the earth. ....... $N$ will it weigh half way down to the centre of the earth .

A

$125$

B

$150$

C

$175$

D

$250$

Solution

$\mathrm{g}^{\prime}=\frac{\mathrm{gr}}{\mathrm{R}}$

$\mathrm{W}_{\text {surface }}=\mathrm{mg}=250$

$\mathrm{W}_{\text {half distance }}=\frac{\mathrm{mg}}{2}=125 \mathrm{N}$

Standard 11

Physics

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