A strain gauge is used to measure the tension force in a 2-cm diameter bar of steel with Young modulus of 2.07 x 107 N/cm2 (30 x 106 lb./in.2). The strain gauge has a nominal resistance of 160 Ω and a GF of 5. The gauge is connected to a bridge supplied with a 10 Vdc. The bridge was initially balanced. After the bar is put under tension, the bridge output voltage is 0.0008 Vdc. Draw the schematic of the bridge (setup). Calculate the force on the bar.

1. please write clean and as much detail as you can 2. please draw the FBD since I am not understanding the temperature placement on this question 3. to make your job easier the following formula apply : Q_cond=Q_conv+Q_radi KA(T_i-T_o )/L=hA(T_s-T_∞ )+ε σ A(T_s^4-T_∞^4 )

0.6. The resistance of a certain size of copper wire is given as. R = Ro[1 + a(T-20)] %3D where Ro-60+0.3 percent is the resistance at 20°C, a=0.004°C-1+1 percent is the temperature coefficient of resistance, and the temperature of the wire is T=30°C + 1 percent. Calculate the resistance of wire and its uncertainty.

A one-element bar of length L=400 cm clamped at x=0, and simply supported at x=l. The bar is subject to flexural vibration. Its squared natural frequency can be expressed as a function of the material density p, the cross-sectional area is A, the second moment of area I, and the Young's modulus, E, as: ΕΙ @²=b- PA Answer the following: • The number of degrees of freedom of the bar is The value of b is . The units of b are (give your answer to 2 decimal places) (in the international system, SI) Note local mass and stiffness matrices for bars subject to flexural vibrations are given here: 156 22L 54 -13L 4L² 13L -3L² 54 13L 156 -22L -13L-3L² -22L 4L² M= PAL 22L 420 and K = ΕΙ L³ 12 6L -12 6L 6L 4L2 -6L 2L² -12 -6L 12 -6L 6L 2L² -6L 4L²