2h D PROBLEM 2.4-21

Residential Construction Academy: House Wiring (MindTap Course List)
5th Edition
ISBN:9781337402415
Author:Gregory W Fletcher
Publisher:Gregory W Fletcher
Chapter4: Test And Measurement Instruments Used In Residential Wiring
Section: Chapter Questions
Problem 2RQ
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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 ac find aD in the wires due to the load P = 340 lb acting at end B of the bar.

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

2h
D
PROBLEM 2.4-21
Transcribed Image Text:2h D PROBLEM 2.4-21
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