A typical jet plane travels at 247 m/s at a cruising altitude of 8380 m. The windows on a jet plane measure 0.356 m × 0.356 m. Calculate the force exerted on such a window as the plane flies at 8380 meters above the sea level. (Assume the density and pressure of air at 8380 m is 0.512 kg/m3 and 34800 Pa but the interior of the plane remains pressurized to atmospheric pressure, that is, 101325 Pa.) ______N
Viscosity
The measure of the resistance of a fluid to flow is known as viscosity. Most fluids have some resistance to motion, the resistance provided by the fluid is called viscosity. This resistance is created by the force of attraction between the fluid molecules. If you pour water through a funnel, it flows easily and quickly, because it has very little resistance. But if you pour honey through a funnel, it may take a little time longer, as the density of honey is high.
Poiseuille's Law
The law of Poiseuille or Poiseuille's equation states that the pressure drop of an incompressible fluid especially a liquid in a laminar flow that passes through a cylindrical tube of length L, radius r, pressure gradient ΔP, and mainly depends on the viscosity of the fluid is nothing but the pressure difference of the layers of fluids. ΔP=P1-P2
Drag Forces
Forces that occur due to the movement of fluid are known as fluid mechanics. Following are the fluids present:
A typical jet plane travels at 247 m/s at a cruising altitude of 8380 m. The windows on a jet plane measure 0.356 m × 0.356 m. Calculate the force exerted on such a window as the plane flies at 8380 meters above the sea level. (Assume the density and pressure of air at 8380 m is 0.512 kg/m3 and 34800 Pa but the interior of the plane remains pressurized to atmospheric pressure, that is, 101325 Pa.)
______N
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