Air ( density :1,2 kg /m3 viscosity : 1.5x10-5 m2 /s ) flows over a flat plate of length 2,5 m and width 1 m at a test speed of 1,5 m/s. Determine the approximate magnitude of frictional force, F . (Flat plate is totally submerged in air and both surfaces of it are of same surface quality ) ANSWER: F = 0,017955 N

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Q: Engine oil at 40°C flows over a 20-m-long & 3-m-wide smooth flat plate with a free-stream velocity…

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