The change in diameter of a large steel bolt is carefully measured as the nut is tightened. Knowing that E = 200 GPa and ν =0.30, Find the internal force in the bolt if the diameter is observed to decrease by 15μm

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.

What precautions should you take to prevent injuries when dealing with heavy loads?

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.