A body is fully immersed in water. Calculate the change in potential energy of the body, raised to a height h inside the water.
Text Solution
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Let `rhoandrho_(0)` be the density of the material of the body and the water respectively. If V is the volume of the body, then apparent weight of the body = `Vrhog-Vrho_(0)g=V(rho-rho_(0))g` Therefore, increase in potential energy of the body, `DeltaU` = work done in raising the body to a height h `=V(rho-rho_(0))gxxh`
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