Examine the following strain gage installation. Assume R=350 W and GF=2.0 for all gages and that the beam is 0.5" wide, 0.15" thick, and composed of an aluminum alloy with E = 10x10 3 ksi, and n = 0.3. write an expression for the axial load,P, in terms of the output bridge delta eout and the excitiation voltage ein