The product of modulus of elasticity (E) and polar moment of inertia (J) is called torsional rigidity.

Determine the yield stress of a steel rod 20 mm diameter, if the yield load on the steel rod is 88kN.

________ joints are necessary to keep a structure safe against shrinkage.

Determine section modulus for beam of 100mm diameter.

What are the units for section modulus?

The stress is directly proportional to ___

A hollow shaft has outside diameter 120 mm and thickness 20 mm. Find the polar moment of inertia (J).

At the neutral axis, bending stress is _____

The bending strain is zero at ___