In today’s lecture, we will go a little more general way; we will assume that as if if the fluid is viscous, then what will happen to the equation of motion. As you know that in case, there are 2 major equations satisfied by a flow fluid. One is the equation of continuity. The other is the equation of motion. Equation of continuity says that that is comes out comes from the conversation of mass, whereas the equation of motion comes from the law of conservation of momentum and again, which is also come comes from the Newton second law of motion.