Question

Find the expression for pressure at a point inside a liquid?

Answer 1

buoyant force
acts their

Answer 2

surface forces acting on the three faces of the wedge are due to the pressures,,andas shown. These forces are normal to the surface upon which they act. We follow the usual convention that compression pressure is positive in sign. We again remind ourselves that since the fluid is at rest there is no shear force acting. In addition we have a body force, the weight,Wof the fluid within the wedge acting vertically downwards.Summing the horizontal and the vertical forces we have,