Two thin rectangular plates, one very smooth and one very rough, will be welded to each other in the below two configurations Each plate has a length of 2 m and a width of 1 m During service, each welded configuration will be exposed to steady winds of speed 5 m s that flow parallel on on side of the plates in the shown directions The air density and viscosity can be taken as 1 2 k g m 3 and 1 8 1 0 5 P a s , respectively Determine the drag force exerted by the wind on each configuration Configuration I Configuration II

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Question: Two thin rectangular plates, one very smooth and one very rough, will be welded to each other in the below two configurations. Each plate has

Two thin rectangular plates, one very smooth and one very rough, will be welded to each other in the below two configurations. Each plate has a length of

2 m

and a width of

1 m .

During service, each welded configuration will be exposed to steady winds of speed

5 \frac{m}{s}

that flow parallel on on side of the plates in the shown directions. The air density and viscosity can be taken as

1.2 k \frac{g}{m^{3}}

and

1.8 10^{- 5} P a * s,

respectively. Determine the drag force exerted by the wind on each configuration.

Configuration I

Configuration II

Two thin rectangular plates, one very smooth and one very rough,

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