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Two vessels A and B of different shape have the same base area and are filled with water upto the same height h. The force exerted by water on the base is FA for vessel A and FB for vessel B. The respective weight of the vessels are WA and WB. Then

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Important Questions on Mechanical Properties of Fluids

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A tank with a square base of area 2m2 is divided into two compartments by a vertical partition in the middle. There is a small hinged door of face area 20cm2 at the bottom of the partition. Water is filled in one compartment and an acid of relative density 1.5 in the other, both to a height of 4m. If g=10 ms-2, the force necessary to keep the door closed is
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A wooden cube just floats inside water when a 0.2kg mass is placed on it. When the mass is removed, the cube is 2cm above the water level, what is the size of each side of cube?
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A uniformly tapering vessel shown in figure is filled with a liquid of density 1000kgm-3. The force that acts on the base of the vessel due to the liquid is (Take g=10ms-2)

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A sphere of radius R and made of material of relative density 1.5 has a concentric cavity of radius r. It just floats when placed in a tank full of water. The value of R/r will be
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A slender homogeneous rod of length 2L floats partly immersed in water being supported by a string fastened to one of its end. The specific gravity of the rod is 0.75. The length of rod that extends out of water is

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A body having volume V is floating, fully submerged in a liquid of density ρ. If the container starts moving upward with constant acceleration g3 then the buoyant force acting on the body will become

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If container is accelerated towards right with acceleration a=g. Find pressure at A.

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A wide tank of cross-section area A, containing a liquid to a height H, has an orifice at its base of area A3. The initial acceleration of top surface of liquid is