Wind at 20°C and 1 atm blows at 75 km/h past a flagpole18 m high and 20 cm in diameter. The drag coefficient,based on the frontal area, is 1.15. Estimate the wind-inducedbending moment at the base of the pole.(a) 9.7 kN . m, (b) 15.2 kN . m, (c) 19.4 kN . m, (d) 30.5 kN . m,(e) 61.0 kN . m
Wind at 20°C and 1 atm blows at 75 km/h past a flagpole18 m high and 20 cm in diameter. The drag coefficient,based on the frontal area, is 1.15. Estimate the wind-inducedbending moment at the base of the pole.(a) 9.7 kN . m, (b) 15.2 kN . m, (c) 19.4 kN . m, (d) 30.5 kN . m,(e) 61.0 kN . m
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Wind at 20°C and 1 atm blows at 75 km/h past a flagpole
18 m high and 20 cm in diameter. The drag coefficient,
based on the frontal area, is 1.15. Estimate the wind-induced
bending moment at the base of the pole.
(a) 9.7 kN . m, (b) 15.2 kN . m, (c) 19.4 kN . m, (d) 30.5 kN . m,
(e) 61.0 kN . m
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