would I find torsion of a hollow foam tube if I'm only given Angle of twist=70 degrees L=20 meters Outside diameter=Do=7 meters Inside diameter=Di=2.5 meters J=(pi/2)(ro^4-ri^4) Note:shear Modulus is unknown because I didn't know what material the foam

Mechanics of Materials (MindTap Course List)
9th Edition
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Barry J. Goodno, James M. Gere
Chapter2: Axially Loaded Members
Section: Chapter Questions
Problem 2.2.9P: A safety valve on the top of a tank containing steam under pressure p has a discharge hole of...
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How would I find torsion of a hollow foam tube if I'm only given Angle of twist=70 degrees L=20 meters Outside diameter=Do=7 meters Inside diameter=Di=2.5 meters J=(pi/2)(ro^4-ri^4) Note:shear Modulus is unknown because I didn't know what material the foam is
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