A steel wire of 20 mm diameter is bent into a circular shape of 10 m radius. If the modulus of elasticity is 2 × 106 kg/cm2, then the maximum stress induced in the wire is:

When a bar of length l and uniform cross-section is rigidly fixed at the upper end and hangs freely, the total elongation produced in the bar due to its own weight is given by (where w = weight per unit volume and E = Modulus of Elasticity):

The hoop stress set up in a thin cylinder subjected to internal fluid pressure is: