A residential flagpole has a diameter of 100 mm and is 7.62 m high. The flagpole is made of smooth aluminum. The recommended flag for this flagpole has dimensions of 1.22 m × 1.83 m, and the flag...


A residential flagpole has a diameter of 100 mm and is 7.62 m high. The flagpole is made of smooth aluminum. The recommended flag for this flagpole has dimensions of 1.22 m × 1.83 m, and the flag manufacturer states that the drag coefficient of the flag is equal to 0.1, provided the area in the drag equation is taken as the length times the width of the flag. For a wind speed of 105 km/h, compare the moment on the base of the flagpole with and without the flag. What percentage increase in moment is caused by flying the flag? Assume standard air at sea level.

Nov 21, 2021
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