Class XI Physics Mechanics of Fluids 3

Barometer is accelerated upward so that mercury column is only 50cm high, if atmospheric pressure is 75cm of mercury then, acceleration of barometer is

A cubical block of volume ‘v’ is snugly in contact with bottom. Find contact force between bottom & block P₀ = atmospheric pressure

Tube carries ideal fluid. There are two points shown in diagram.
P₁ = pressure at point 1
V₁ = speed at point 1
P₂ = pressure at point 2
V₂ = speed of point 2

If the terminal speed of a sphere of gold (density = 19.5 kg /m³) is 0.2 m/s in a viscous liquid (density = 1.5 kg/m³), find the terminal speed of a sphere of silver (density = 10.5 kg/m³) of the same size in the same liquid.

A uniform cylinder of length L and mass M having cross-sectional area A is suspended, with its length vertical, from a fixed point by a massless spring, such that it is half submerged in a liquid of density σ at the equilibrium position. The extension x of the spring when it is in equilibrium is (Here k is spring constant)

A uniform narrow tube is bent into a circle of radius R and it lies in a vertical plane. Two liquids of equal volume and having densities ρ and σ (ρ > σ) fill the half tube. θ is the angle as shown in figure. Then