Question

A body weights to 1000 gf in air and 750 gf in water when it is completely immersed in water. Find [2]
I) the upthrust on the body.

Answer 1

☆ SOLUTION ☆

Weight of the body in air =1000gf

Weight of the body in water =750gf

∴ (i) loss of weight of the body when immersed in water =1000gf−750gf=250gf.

(ii) upthrust of the body=loss in weight of the body =250gf.

(iii) upthrust =Vdg

$⇒250gf×g=V×1gcm^{−3}×g$

$(density\:of\:water=1gcm^{−3} )$

$⇒volume\:of\:the\:body\:V=250cm^3$

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