Show complete solution A shaft 70.0 mm diameter is beingpushed at speed of 400 mm/s througha bearing sleeve 70.2 mm in diameterand 250 mm long. The clearance,assumed uniform, is filled with oil at 20deg.C with kinematic viscosity equal to0.005 m²/s and specific gravity 0.9.Find the force exerted by the oil on theshaft.BearingSleeveShaftTHEMOBILAOil (betweenSleeve and Shaft)

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Answered: A shaft 70.0 mm diameter is being…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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1. A shaft with 120 mm diameter and 200 mm longth rotatos in the cylindor at 40 rpm, the distance between the cylinder and the shaft is 0.04 mm and is fillod with oil. Dynamic viscosity of the oil is p = 0.04 Ns/m2. Find tho moment to turn the shaft. 0.04 mm M 120 mm L=200 mm Oil p-0.04 Nsim? 2. A 0.4 mm diameter glass tube is inserted into kerosene at 20°C (p=804kg/m³). The contact angle of kerosene with a glass surface is 26°. Determine the capillary rise of kerosene in the tube. (The surface tension of kerosene-glass at 20'C is 0.028 N/m) 3. A liquid which is compressed in a cylindor has a volume of 1200 cm' at 1.2 MN/m² and 990 cm' at 2 MN/m?. What is the comprossibility of the liquid (K) ? 4. Find capillory rise (h) betwoen two concentric tubos that have radius of , and n (contact angle is 0, specific woight of fluid is y).
An incompressible fluid (kinematic viscosity =7.4x10-7 m2/s, specific gravity=0.88) is held between two parallel plates. If the top plate is moved with a velocity of 0.5 m/s while the bottom one is held stationary the fluid attains a linear velocity profile in the gap of 0.5 mm between these plates,find the shear stress in Pascal on the surface of top plate.
Shaft (250 mm diameter) rotates at 250 rpm inside a sleeve (251 mm diameter) with a constant clearance. If the power required to rotate the shaft is 2204 watts, find the viscosity (N.sec/m) of lubricant oil in the clearance. Take length of sleeve as 150 mm. Your answer
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Two plates are placed at a distance of 15 mm apart. The lower plate is fixed while the upper plate having surface area of 1.0 m^2 is pulled at 0.30 m/s. Whar is the force in Newton required to the speed if the fluid separating them is having viscosity of 1.5 poise?
A shaft (250 mm diameter) rotates at 250 rpm inside a sleeve (251 mm diameter) with a constant clearance. If the power required to rotate the shaft is 2204 W, find the viscosity of lubricant oil in the clearance. Take length of sleeve as 150 mm. Assume a linear velocity profile in the fluid film.
Q:- A solid circular cylinder of diameter 100 mm and length 200 mm slides inside a vertical smooth pipe that has inside diameter 100.5 mm. The small space between the cylinder and the pipe is lubricated with an oil film that has viscosity 3 N.s/m2.The cylinder weight 20 N and concentric with the pipe as it falls .Find the rate of the changer in velocity of the cylinder? Pbe Cylinder O Flm
plzz help meeeeeeeeee The belt moves at a steady velocity V and skims the top of oil tank. Assuming a linear velocity profile in the oil, what is the required belt-drive power P (watt) (P= power = force x Velocity) if the belt moves at 3.5 m/s over oil with specific gravity of S=3.6 and oil viscosity of 0.004 m2/s. Belt geometry L= 2 m, b = 60 cm, and oil depth is h = 3 cm?
The distance between two horizontal plates is 16mm and filled with oil of viscosity 1.75 x 10-3Poise. Calculate shear stress if upper plate is moved with velocity 3.5m/s relative to lower plate. Take specific gravity of the oil as 0.8.
A shaft 70-mm in diameter is being pushed at a speed of 400mm/s through a bearing sleeve 70.2-mm in diameter and 250mm long. The clearance is filled with oil with a kinematic viscosity of v = 0.005 m²/s and SG-0.9. A. Find the frictional resistance exerted by the oil on the shaft in Newtons (N). B. If the shaft in the problem above is fixed axially and rotated inside the sleeve at 2000 rpm, determine the resisting torque exerted by the oil and the power required to rotate the shaft in kilowatts (kW).
A hydrodynamic journal bearing is subject to 2000 N load at a rotational speed of 2000 rpm Both bearing bore diameter and length are 40 mm. If radial clearance is 20 um and bearing is lubricated with an oil having viscosity 0.03 Pa-s, find the Sommerfield number of the bearing.
A piston 796 mm diameter and 200 mm long works in a cylinder of 800 mm diameter. If the annular space is filled with lubricating oil of viscosity 5 centipoise, calculate the speed of descent in m/s of the piston in vertical position. The weight of the piston and the axial load are 9.81N.

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