Chapter 13 – Fluid Mechanics
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A balloon has volume 1000 m^3. It is filled with hydrogen (rho = 0.09 g/l). If the density of air is 1.29 g/l, it can lift a total weight of
17
Sep
A balloon has volume 1000 m^3. It is filled with hydrogen (rho = 0.09 g/l). If the density of air is 1.29 g/l, it can lift a total weight of A balloon has volume 1000 m^3. It is filled with hydrogen (rho = 0.09 g/l). If the density of air is 1.29 g/l it can [...]
A raft of wood of mass 120 kg floats in water. The weight that can be put on the raft to make it just sink should be (d raft = 600 kg / m^3
17
Sep
A raft of wood of mass 120 kg floats in water. The weight that can be put on the raft to make it just sink should be (d raft = 600 kg / m^3 A raft of wood of mass 120 kg floats in water. The weight that can be put on the raft to [...]
Two cylinders of same cross-section and length L but made of two different materials of densities d1 and d2 are connected together to from a cylinder of length 2L. The combination floats in a liquid of density d with a length L/2 above the surface of the liquid.If d1
17
Sep
Two cylinders of same cross-section and length L but made of two different materials of densities d1 and d2 are connected together to from a cylinder of length 2L. The combination floats in a liquid of density d with a length L/2 above the surface of the liquid.If d1 Upthrust will remain same September 17, [...]
A piece of steel has a weight w in air, w1 when completely immersed in water and w2 when completely immersed in an unknown liquid. The relative density (specific gravity) of liquid is
17
Sep
A piece of steel has a weight w in air, w1 when completely immersed in water and w2 when completely immersed in an unknown liquid. The relative density (specific gravity) of liquid is A piece of steel has a weight w in air w1 when completely immersed in water and w2 when completely immersed in [...]
A pump is designed as a horizontal cylinder with a piston of areal A and and outlet orifice of area A arranged near the cylinder axis. Find the velocity of out flow of the liquid from the pump if the piston moves with a constant velocity under the action of a constant force F. The density of the liquid is ρ.
17
Sep
A pump is designed as a horizontal cylinder with a piston of areal A and and outlet orifice of area A arranged near the cylinder axis. Find the velocity of out flow of the liquid from the pump if the piston moves with a constant velocity under the action of a constant force F. The [...]
The volume of an air bubble becomes three times as it rises from the bottom of a lake to its surface. Assuming atmospheric pressure to be 75 cm of Hg and the density of water to be 1/10 of the density of mercury, the depth of the lake.
17
Sep
The volume of an air bubble becomes three times as it rises from the bottom of a lake to its surface. Assuming atmospheric pressure to be 75 cm of Hg and the density of water to be 1/10 of the density of mercury, the depth of the lake. Upthrust will remain same September 17, 2020 [...]
A metal ball immersed in alcohol weights W1 at 0∘C and W2 at 50∘C. The coefficient of expansion of cubical the metal is less than that of the alcohol. Assuming that the density of the metal is large compared to that of alcohol, it can be shown that
17
Sep
A metal ball immersed in alcohol weights W1 at 0∘C and W2 at 50∘C. The coefficient of expansion of cubical the metal is less than that of the alcohol. Assuming that the density of the metal is large compared to that of alcohol, it can be shown that Upthrust will remain same September 17, 2020 [...]
A wooden block of mass 8kg is tied to a string attached to the bottom of a tank. The block is completely inside the water. Relative density of wood is 0.8. Taking g=10m/s^2. what is the tension in the string?
17
Sep
A wooden block of mass 8kg is tied to a string attached to the bottom of a tank. The block is completely inside the water. Relative density of wood is 0.8. Taking g=10m/s^2. what is the tension in the string? Upthrust will remain same September 17, 2020 Category: Arihant Physics by D.C Pandey , Chapter [...]
A capillary tube of radius R is immersed in water and water rises in it to a height H . Mass of water in the capillary tube is . M If the radius of the tube is doubled, mass of water that will rise in the capillary tube will now be
17
Sep
A capillary tube of radius R is immersed in water and water rises in it to a height H . Mass of water in the capillary tube is . M If the radius of the tube is doubled, mass of water that will rise in the capillary tube will now be A capillary tube of [...]
A object of mass 1 kg and radius 1 m is falling vertically downward inside liquid in a gravity free space. At certain instant the velocity of the sphere is 2ms^−1. If the coefficient viscosity of the liquid is 6π/1 SI units, then velocity of ball will become 0.5ms^−1 after a time
17
Sep
A object of mass 1 kg and radius 1 m is falling vertically downward inside liquid in a gravity free space. At certain instant the velocity of the sphere is 2ms^−1. If the coefficient viscosity of the liquid is 6π/1 SI units, then velocity of ball will become 0.5ms^−1 after a time Upthrust will remain [...]