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The work done by lifting a body of mass 20kg and specific gravity 3.2 to a height of 8m in water is?(g=10ms-2) The work done by lifting a body of mass 20kg and specific gravity 3.2 to a height of 8m in water is?(g=10ms-2)
Bouyant force =Mg/density =200/3.2=62.5Weight of body in water=Weight - bouyant force=200-62.5=137.5 W=F•S=FScosx=137.5×8×1=1100J✓✓
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