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प्रश्न
Explain why A fluid flowing out of a small hole in a vessel results in a backward thrust on the vessel
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उत्तर १
This is because of principle of conservation of momentum. While the flowing fluid carries forward momentum, the vessel gets a backward momentum.
उत्तर २
When a fluid flows out from a small hole in a vessel, the vessel receives a backward thrust. A fluid flowing out from a small hole has a large velocity according to the equation of continuity:
Area × Velocity = Constant
According to the law of conservation of momentum, the vessel attains a backward velocity because there are no external forces acting on the system
संबंधित प्रश्न
Glycerine flows steadily through a horizontal tube of length 1.5 m and radius 1.0 cm. If the amount of glycerine collected per second at one end is 4.0 × 10–3 kg s–1, what is the pressure difference between the two ends of the tube? (Density of glycerine = 1.3 × 103 kg m–3 and viscosity of glycerine = 0.83 Pa s). [You may also like to check if the assumption of laminar flow in the tube is correct].
If Reynold's number is greater than 3000, the flow of liquid is:
Water from a pipe is coming at a rate of 100 liters per minute. If the radius of the pipe is 5 cm, the Reynolds number for the flow is of the order of ______.
(density of water = 1000 kg/m3, coefficient of viscosity of water = 1 mPa s)
If p is the density and η is the coefficient of viscosity of fluid that flows with a speed v in the pipe of diameter d, the correct formula for Reynolds number Re is ______.
