G A block weighing 1 kN an XC Chegg Study | Guided Solt xxxxxxxxxxxxxxxxxxx (1).pdf x →C file:///C:/Users/Raul/Downloads/xxxxxxxxxxxxxxxxxx%20(1).pdf Conservative; H a4 2x4 +2- a4 ax² ǝy + -(1 + ay4 where = stress function Poisson's ratio V scalar function whose gradient [(av/ax)i(av/ay)j] is the body-force distribution where the body force is given per unit volume What would the dimensions have to be of the stress function? 1.10 Convert the coefficient of viscosity μ from units of dynes, seconds, and centimeters (i.e., poises) to units of pound-force, seconds, and feet. 1.11 What are the dimensions of kinematic viscosity? If the viscosity of water at 68°F is 2.11 x 10 lbs/ft², what is the kinematic viscosity at these conditions? How many stokes of kinematic viscosity does the water have? 1.12 Water is moving through a pipe. The velocity profile at some section is shown and is given mathematically as stationary plate on a layer of oil. If the velocity profile is that of a parabola, with the oil at the plates having the same velocity as the plates, what is the shear stress on the moving plate from the oil? If a linear profile is assumed, what is then the shear stress on the upper plate? Figure P1.13 Assumed profile Vo Oil layer 1.14 A block weighing 1 kN and having dimensions 200 mm on an edge is allowed to slide down an incline on a film of oil having a thickness of 0.0050 mm. If we use a linear velocity profile in the oil, what is the terminal speed of the block? The viscosity of the oil is 7 x 10-2 P. 1 KN I'm Cortana. Ask me anything. B (D² V= 4μ 4 0.0050 mm where B = a constant V radial distance from centerline velocity at any position r What is the shear stress at the wall of the pipe from the water? What is the shear stress at a position r D/4? If the profile above persists a distance L along the pipe, what drag is induced on the pipe by the water in the direction of flow over this distance? -Velocity profile Figure P1.14 1.15 A cylinder of weight 20 lb slides in a lubricated pipe. The clearance between cylinder and pipe is 0.001 in. If the cylinder is observed to decelerate at a rate of 2 ft/s² when the speed is 20 ft/s, what is the viscosity of the oil? The diameter of the cylinder D is 6.00 in and the length L is 5.00 in. 日 6 in- 5 in 0 12:11 AM 9/9/2016