Related Questions

A plate with an elliptical hole in the centre, with semi-major axis (a) perpendicular to the direction of loading and semi-minor axis (b) along the direction of loading, is subjected to a pull P. The maximum stress induced at the edge of the hole is equal to (where $$\sigma $$ = Stress for a plate with no hole i.e. nominal stress)
In the blast furnace, incorporation of water vapour in the blast gives the following effect.
If it takes 50 workers 4 hours to dig a hole, how long should it take 30 workers to dig the same hole?
If it takes 4 hours to dig a hole by 50 workers, how long should it take to dig the same hole by 30 workers?