(Solved): Q1. (a) (b) (c) State the Newton's Law of Viscosity in fluid mechanics. (04 marks) The space betwe ...

Q1. (a) (b) (c) State the Newton's Law of Viscosity in fluid mechanics. (04 marks) The space between two square parallel plates is filled with oil. Each side of the plate is 720 mm. The thickness of the oil film is 15 mm. The upper plate, which moves at 3 m/s requires a force of 120 N to maintain the speed. Determine: the dynamic viscosity of the oil. the kinematic viscosity of oil if the specific gravity of oil is 0.95. (1) (ii) (08 marks) The velocity distribution for flow over a plate is given by u-2y-y² where u is the velocity in m/s at a distance y metres above the plate. Determine the velocity gradient and shear stress at the boundary and 1.5m from it. (08 marks) Q2. (a) Describe the terms "Total pressure" and "Centre of pressure" in hydrostatics. (b) (4X2=08marks) An inclined rectangular sluice gate AB 1.2 m by 5 m size as shown in Fig.Q2 is installed to control the discharge of water. The end A is hinged. Determine the force normal to the gate applied at B to open it. Free water surface Hinge. G C 12mI Fig.Q2. ??? .5