Answered: MA C L Bk b IA В Rg

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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A post having a hollow, circular cross sectionsupports a P = 3.2 kN load acting at the end of an armthat is b =1.5 m long (see figure). The height of thepost is L = 9 m, and its section modulus is S = 2.65x10⁵ mm³. Assume that the outer radius of the post isr2 =123 mm, and the inner radius is r1 =117 mm.(a) Calculate the maximum tensile stress σmax andmaximum in-plane shear stress τmax at point A onthe outer surface of the post along the x axis dueto the load P. Load P acts at B along line BC.(b) If the maximum tensile stress and maximumin-plane shear stress at point A are limited to90 MPa and 38 MPa, respectively, what is thelargest permissible value of the load P?

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