Fluid Mechanics Viscosity Question 153

Question: A cylindrical vessel of cross-sectional area$ 1000cm^{2} $ , is fitted with a frictionless piston of mass 10 kg, and filled with water completely. A small hole of cross-sectional area$ 10mm^{2} $ is opened at a point 50 cm deep from the lower surface of the piston. Find the velocity of efflux from the hole. (in m/s)

Solution:

Answer: 3.40