A few questions about stress

1. The force acting perpendicularly on a unit area, or the force exerted on a unit area within a fluid. In physics, it is called “pressure”. 2. The pressure exerted on any point within a stationary liquid is called the hydrostatic pressure of the liquid at that point. The static pressure at a certain point in a liquid is equal to the pressure on the surface of the liquid plus the hydrostatic head resulting from the depth of that point below the surface. 3. Gravity is the force that acts on an object due to Earth’s attraction; it is known as gravity. In everyday language, the magnitude of this force acting on an object is often referred to simply as the object’s weight. The unit of gravity is N, but its symbol is G. The formula is: G=mg. m is the mass of the object, and g is generally taken as 9.8 N/kg. 4. The static head, also known as pressure head, is the static pressure energy possessed by a unit weight of fluid. Suggestion: Find a book on principles of chemical engineering and read it.