The force applied at the handle of the rigid lever causes the lever to rotate clockwise about the pin B through an angle of 2.2? . The wires are unstretched when the lever is in the horizontal position.

A) Determine the average normal strain developed in wire AH.
B) Determine the average normal strain developed in wire CG. C) Determine the average normal strain developed in wire DF.

Oxygen gas enters well-insulated diffuser at 25 lbf/in.2, 420r, with a velocity of 860 ft/s through a flow area of 1.6 in.^2. at the exit, the flow area is 12 times the inlet area, and the velocity is 19 ft/s. the potential energy change from inlet to exit is negligible. assuming ideal gas behavior for the oxygen and steady-state operation of the diffuser, determine the following: (a) the exit temperature, in r(b) the exit pressure, in lbf/in.^2 (c) the mass flow rate, in lb/s