The bronze rod was cooled in liquid nitrogen to a temperature of 72° K. The cooled rod was tightly inserted into a rectangular hole in a rigid holder having a temperature of 293° K so that the gap between the ends of the rod and the corresponding planes of the holder hole can be considered equal to zero. What was the pressure of the rod on the holder after it was heated to a temperature of 293° K? Coefficient of linear expansion of bronze a=1.75·105 1/deg. Young's modulus E=1.04·1011 H/v2.

Detailed solution. Format gif