Steady flow and unsteady flow

 State the Newton's law of viscosity. Explain the importance of viscosity in fluid motion. What is the effect of temperature on viscosity of water and that of air.

The dynamic viscosity of an oil, used for lubrication between a shaft and sleeve is 6 poise. The shaft is of diameter 0.5m and rotates at 210 rpm. Calculate the power lost in the bearing for a sleeve length of 90 mm. The thickness of the oil film is 1.4 mm.

Derive an expression for velocity distribution for laminar flow through a circular pipe. Show that the friction coefficient is equal to 16/Re where Re is the Reynolds number.

A certain mass of a liquid has a volume of 5 m 3 and a weight of 39240. Find the specific weight, specific mass and specific gravity of the liquid.

Prove that the vertical component of the resultant force on submerged curved surface is equal to the weight of the liquid supported by the curved surface.

Stable equilibrium