We study the model of the perfect fluid. Firstly, we discuss the problem
posing for this fluid model and derive the Lamb form of the equation of motion.
Further we investigate some simplest problems which are associated with the perfect
fluid. We consider the hydrostatics, the barotropic fluid, the Bernoulli equation,
trajectories and streamlines. Finally we obtain the vorticity equation.
Keywords: Barotropic fluid, Bernoulli equation, Hydrostatics, Lamb form of
equation of motion, Perfect fluid, Stationary flow, Streamlines, Trajectories,
Vortex equation.