What torque is required to drive the disk at 760 rpm

Assignment Help Civil Engineering
Reference no: EM13320803

A flat disk spins within an oil-filled enclosure. Clearances between the enclosure to both sides of the disk is 2.3 mm. The disk surface (area subject to shear) extends from radius 10mm to 90 mm. What torque is required to drive the disk at 760 rpm (rpm is revolution per minute) if the oil's absolute viscosity is 0.12 N s/m2?

Reference no: EM13320803

Questions Cloud

Calculate the work done by vector : A construct force vector F = 2.0i + 4.0j N acts on an object as it means along a straight- line path. If the object is displacement is d = 2.0i + 5.0j m calculate the work done by vector F
Determine the density in si unit of brass : The specific weight (wt./Vol.) of brass is 520 lb/ft^3. Determine its density (mass/vol.) in SI units. Use an appropriate prefix.
Determine how many tons of aggregate will be needed : Base course aggregate has a target dry density of 119.7 lb/cu ft in place. It will be laid down and compacted in a rectangular street repair area of 2000 ft*48ft*6in.
What is the total work done by the two tugboats : Two tugboats pull a disabled supertanker. Each tug exerts a construct force of 2.00 x 10^6 N, What is the total work done by the two tugboats on the supertanker
What torque is required to drive the disk at 760 rpm : A flat disk spins within an oil-filled enclosure. Clearances between the enclosure to both sides of the disk is 2.3 mm. The disk surface (area subject to shear) extends from radius 10mm to 90 mm.
Discuss how the marketing strategy : You have been hired as the marketing manager. Research and identify major approaches of how innovations like these are adopted by consumers. Discuss how the marketing strategy for the car needs to rapidly move through these processes.
Estimate the viscosity of water at 30 degree c : The dynamic viscosity of water at 20°C is 1.00 x 10-3 N-s/m2, and the viscosity at 40°C is 6.53 x 10-4 N-s/m2. Estimate the viscosity at 30°C.
What is the permeability : An iron-core solenoid is 43cm long and 1.7cm in diameter, and has 720 turns of wire. What is the permeability %u03BC at this high field strength
What will be the percentage decrease in specific volume : Water in a hydraulic press is subjected to a pressure of 4500 psia at 68 degrees F. If the initial pressure is 15 psia, approximately what will be the percentage decrease in specific volume

Reviews

Write a Review

Civil Engineering Questions & Answers

  What minimum angular velocity is necessary to keep the water

A bucket full of water is to be rotated in the vertical plane. What minimum angular velocity, in rad/s, is necessary to keep the water inside if the rotating arm is 120 cm

  Which route is attractive by using total investment analysis

The state highway department is considering six routes for a new highway. Listed below are the estimated construction costs, maintenance costs, and the user cost associated with each route.

  Compute evaporation rates in the winter and in the summer

At a certain location during the winter, the average air temperature is 10 degrees celcius and the net radiation is 40W/m^2 and during the summer the net radiation is 200W/m^2 and the temperature is 25 degrees celcius.

  Determine the dead load in pounds per linear foot for beams

The beams support one-way slabs, 6 inches thick that span 20 feet center to center. Assume that the beams are 16 inches wide and 24 inches deep. Determine the dead load in pounds per linear foot for the beams, from the concrete structure alone.

  Determine its angular acceleration when t starting from rest

The 50mm radius pulley A of the clothes dryer rotates with an angular acceleration of (80^(1/2)A) rad/s, where angle A is in radians. Determine its angular acceleration when t= 2 , starting from rest.

  Determine unstretched length of each rod neglect the weight

The spring loaded supporting rods AB and AC in the figure below aer used as shock absorbers for transporting fragile loads. Knowing that the elastic spring constants for the rods AB and AC are kab = 1.2 kN/m and kac = 1.5 k N/m

  What would side slope of cut be if catch point is located

A backsight reading of 2.56 was obtained with rod at A and a foresight reading of 7.45 was obtained with the rod at the trial point B. If B is located 37.00 feet from the center line of a planned 50-foot wide road, is the catch point located uphi..

  Determine what is the alkalinity in mg per l as caco3

A water treatment llant and the water treatment plant removes calcium hardness (Ca2+) by precipitating (making) CaCO3(s). If, after establishing equilibrium with CaCO3(s), the dissolved Ca2+ concentration is 10 mg/L and the pH is 10.5.

  Sulphate ions in natural and industrial environments

List some of the common sources of sulphate ions in natural and industrial environments. For a given sulfate concentration, explain which of the following solutions would be the most deleterious and which would be the least deleterious to a permea..

  Why is the time value of money important

Why is the ‘time value of money' important for the evaluation of engineering projects? Provide at least one practical example to support your view (max 2 pages)

  What are the concentrations of h2po4- and hpo42-

The total phosphate concentration (TOTPO4) in a river is 3.2 mg/L as P. The pH of the river is 7.8. What are the concentrations of H2PO4- and HPO42-

  Problem regarding helium balloons

To float a 160 pound man using helium balloons (assume 0.52 cubic feet per inflated balloon). How many balloons would it take? Assume density of air is 1.29 kg/cubic meter and the density of helium is 0.179 kg/cubic meter.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd