Answered: L=6 m, D= 8 cm

Engineering

Mechanical Engineering

L=6 m, D= 8 cm

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter9: Moments And Products Of Inertia Of Areas

Section: Chapter Questions

Problem 9.13P: Figure (a) shows the cross section of a column that uses a structural shape known as W867...

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Question

To measure the drag of an upright person, without violating
human subject protocols, a life-sized mannequin is attached
to the end of a 6-m rod and rotated at Ω = 80 rev/min, as in
Fig. The power required to maintain the rotation is
60 kW. By including rod drag power, which is significant,
estimate the drag area C_DA of the mannequin, in m².

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