Answered: 2h D PROBLEM 2.4-21

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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Question

A rigid bar AB if of a length B = 66 in. is. hinged to a support at A and supported by two vertical wires attached at points C and D (see figure). Both wires have the same cross-sectional area (A= 0.0272 in²) and are made of the same material (modulus E = 30 X 10⁶ psi). The wire at C has a length h = 18 in. and the wire at D has a length twice that amount. The horizontal distances are c = 20 in. and d = 50 in.

(a) Determine the tensile stresses a_c find a_D in the wires due to the load P = 340 lb acting at end B of the bar.

(b) Find the downward displacement 8_B at end B of the bar.

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