A rigid bar ABif of a length B= 66 in. is. hinged to a support at...
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A rigid bar ABif 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 in?) and are made of the same material (modulus E = 30 X 10° psi). The wire at Chas a length h = 18 in. and the wire at Dhas a length twice that amount. The horizontal distances are c= 20 in. and d= 50 in. (a) Determine the tensile stresses a and apin the wires due to the load P= 340 lb acting at end Bof the bar. (b) Find the downward displacement s8pat end B of the bar. 2h D d. PROBLEM 2.4-21 A rigid bar ABif 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 in?) and are made of the same material (modulus E = 30 X 10° psi). The wire at Chas a length h = 18 in. and the wire at Dhas a length twice that amount. The horizontal distances are c= 20 in. and d= 50 in. (a) Determine the tensile stresses a and apin the wires due to the load P= 340 lb acting at end Bof the bar. (b) Find the downward displacement s8pat end B of the bar. 2h D d. PROBLEM 2.4-21
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