Rigid bar ABC is supported by member (1), which has a cross-sectional area of 0.7 in.2, an elastic modulus of E = 10400 ksi,

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Rigid bar ABC is supported by member (1), which has a cross-sectional area of 0.7 in.2, an elastic modulus of E = 10400 ksi, and a coefficient of thermal expansion of a = 12.9 x 10-6/F. Assume that a = 70 in., b = 35 in., and c = 105 in. After load P is applied to the rigid bar and the temperature rises 55F, a strain gage affixed to member (1) measures a strain increase of 2232 . Determine the magnitude of applied load P. Note: Assume the strain measuring system does not automatically compensate for temperature changes. A Answer: P = i a B P b kips DO Strain gage (1) C