An object of density do kept deep inside water of density dw and released. During the time it moves a vertical distance h within the water :-
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An object of density do kept deep inside water of density dw and released. During the time it moves a vertical distance h within the water :-

G1 Physics · Accepted Answer

Step 1: Use hydrostatic equilibrium, P₂−P₁ = ρgΔh; in an accelerating fluid replace g by the effective acceleration where required. Step 2: Equate pressures at the same horizontal level or integrate pressure over the stated surface. Applying these relations to the given data gives B: The gravitational potential energy of the water in the vessel decreases if d₀ < dw. Final answer: B.