For the following questions answer them individually
A vertical sluice gate 3m wide and 2.5m deep contains water on both of its sides. On the upstream side. the water is 5m deep and on the downstream side it is 2m deep from the bottom of the sluice. What is the resultant pressure on the gate?
A type of flow in which the fluid particles while moving in the direction of flow rotate about their mass centre, is called _____.