Chapter 13 – Fluid Mechanics
Sahay Sir > Question Answers > Arihant Physics by D.C Pandey > Volume 1 > Chapter 13 - Fluid Mechanics
Assuming that the atmosphere has the same density anywhere as at sea level (ρ = 1.3 kgm^−3) and g to be constant (g=10ms^−2). What should be the approximate height of atmosphere ? (ρ0 = 1.01×10^5Nm^−2)
18
Sep
Assuming that the atmosphere has the same density anywhere as at sea level (ρ = 1.3 kgm^−3) and g to be constant (g=10ms^−2). What should be the approximate height of atmosphere ? (ρ0 = 1.01×10^5Nm^−2) The relative density of ice is 0.9 and that of sea water is 1.125. What fraction of the whole volume [...]
A cubical block of steel of each side equal to 1 is floating on mercury in vessel. The densities of steel and mercury are ρs and ρm. The height of the block above the mercury level is given by
18
Sep
A cubical block of steel of each side equal to 1 is floating on mercury in vessel. The densities of steel and mercury are ρs and ρm. The height of the block above the mercury level is given by A cubical block of steel of each side equal to 1 is floating on mercury in [...]
A beaker containing water is kept on a spring scale. The mass of water and beaker is 5 kg . A block of mass 2 kg and specific gravity 10 is suspended by means of thread from a spring balance as shown. The readings of scales S1 and S2 are respectively Take, g=10ms^−2
18
Sep
A beaker containing water is kept on a spring scale. The mass of water and beaker is 5 kg . A block of mass 2 kg and specific gravity 10 is suspended by means of thread from a spring balance as shown. The readings of scales S1 and S2 are respectively Take, g=10ms^−2 The relative [...]
A raft of mass M=600 kg floats in calm water with 7 cm submerged. When a man stands on the raft, 8.4 cm are submerged, the man’s mass is
18
Sep
A raft of mass M=600 kg floats in calm water with 7 cm submerged. When a man stands on the raft, 8.4 cm are submerged, the man’s mass is 8.4 cm are submerged A raft of mass M=600 kg floats in calm water with 7 cm submerged. When a man stands on the raft the [...]
The reading of spring balance when a block is suspended from it in air is 60 newton. This reading is changed to 40 newton when the block is submerged in water. The specific gravity of the block is
18
Sep
The reading of spring balance when a block is suspended from it in air is 60 newton. This reading is changed to 40 newton when the block is submerged in water. The specific gravity of the block is The reading of spring balance when a block is suspended from it in air is 60 newton. [...]
The relative density of ice is 0.9 and that of sea water is 1.125. What fraction of the whole volume of an iceberg appears above the surface of the sea ?
17
Sep
The relative density of ice is 0.9 and that of sea water is 1.125. What fraction of the whole volume of an iceberg appears above the surface of the sea ? The relative density of ice is 0.9 and that of sea water is 1.125. What fraction of the whole volume of an iceberg appears [...]
A metallic sphere floats in an immiscible mixture of water (ρw=10^3 kg/m^3) and a liquid (ρL=13.5×10^3 kg/m^3) such that its 2/3rd part is in water and 1/3 th part in the liquid. Find the density of metal.
17
Sep
A metallic sphere floats in an immiscible mixture of water (ρw=10^3 kg/m^3) and a liquid (ρL=13.5×10^3 kg/m^3) such that its 2/3rd part is in water and 1/3 th part in the liquid. Find the density of metal. A raft of wood of mass 120 kg floats in water. The weight that can be put on [...]
A tank contains water on top of mercury as shown in figure. A cubical block of side 10 cm is in equilibrium inside the tank. The depth of the block inside mercury is (RD of the material of block =8.56, RD of mercury =13.6)
17
Sep
A tank contains water on top of mercury as shown in figure. A cubical block of side 10 cm is in equilibrium inside the tank. The depth of the block inside mercury is (RD of the material of block =8.56, RD of mercury =13.6) A tank contains water on top of mercury as shown in [...]
A small block of wood of relative density 0.5 is submerged in water at a depth of 5m. When the block is released, it starts moving upwards, the acceleration of the block is: (g=10ms^-2
17
Sep
A small block of wood of relative density 0.5 is submerged in water at a depth of 5m. When the block is released, it starts moving upwards, the acceleration of the block is: (g=10ms^-2 A small block of wood of relative density 0.5 is submerged in water at a depth of 5m. When the block [...]
A boat having a length of 3 m and breadth 2 m is floating on a lake. The boat sinks by 1 cm when a man gets on it. The mass of the man is
17
Sep
A boat having a length of 3 m and breadth 2 m is floating on a lake. The boat sinks by 1 cm when a man gets on it. The mass of the man is A boat having a length of 3 m and breadth 2 m is floating on a lake. The boat sinks [...]