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.

Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.

Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?

What is creep? what is stress relaxation?