Problem 3.9 (Ans. e, = 0.00435, p = 0.827, ÞM¸ = 1050.4 ft-k) 24 in. 27 in. 6 #11 bars 4 3 in. fy = 80,000 psi f;= 6000 psi -20 in.-

Determine the height h to which liquid should be poured into the cup so that it contacts half the surface area on the inside of the cup. Neglect the cup’s thickness for the calculation.

se in measuring a dis 00 ft when the temperature of the tape is 32°E? 11.7 An aluminum wire is stretched between two rigid supports. If the tensile stress in the wire is 5000 psi at 68°F, what is it at 32°F and 90°F? Assume that the proportional limit is 35,000 psi. 11:8 A 1-m-long-copper bar is placed between two rigid, unyield- ing 11. ich stelupe

1 valve Ah 2 Part B If R = 3.21 in and P2 = Patm = 12.2 psi, find P₁ in [psi]. X Part A A manometer is used to measure the pressure drop across a valve as shown above. Use the equation P = yh to show that AP = P₂ - P₁ = Ah(yw - Ym), where Ah is the manometer reading, Yw is the specific weight of water, and Ym is the specific weight of mercury.