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A conical cup of height and radius , rests as open-end down on a flat surface as shown in the figure. The cup is filled to height with liquid of density . The upward lifting force on the cup by the liquid is . Find the value of .


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Important Questions on Mechanics of Solids And Fluids
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[Take, density of water ]

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A cylindrical block of wood (density = ), of base area and height , floats in a liquid of density . The block is depressed slightly and then released. The time period of the resulting oscillations of the block would be equal to that of a simple pendulum of length (nearly) :

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