Determine the percent reduction in the required force when

Assignment Help Civil Engineering
Reference no: EM13532275

A 50 cm by 20 cm block weighing 150 N is to be moved at aconstant velocity of .8m/s on an inclined surface of 20 degreesfrom horizontal with a friction coefficient of .25.

a. Determine force F that needs to be applied in thehorizontal direction to move the block.

b. If a .3mm thick oil firm with a dynamic visocity of .015 Pas is applied between the block and inclined surface determine thehorizontal force F required to move the block

c. Determine the percent reduction in the required force when the oil film in b. is placed between the block and slope

Reference no: EM13532275

Questions Cloud

Deisgn a thrust block needed to resist the force generated : Deisgn a thrust block needed to resist the force generated by a 45 degree flanged regular elbow which carries a flow of 14 cfs.  The diameter of the fitting narrows from 24 inches to 18 inches and the inlet pressure is 100 psi.
Please provide your analysis in details : A right-angle Cone, with base diameter 2.0m and height 2.45m, isinverted and fixed at the ceiling as shown in Figure 1. The floor height is 2.5m.
The maximum total acceleration of the train must not exceed : A monorail train starts from rest on a curve of radius 400 m and accelerates at the constant rate a_t. If the maximum total acceleration of the train must not exceed
Determine the height from the ground and the time at which : a two story school has interior columns that are spaced 15 ft apartin two perpendicular directions. If the loading on the flat roof isestimated to be 20 lb/ft^2 determine the reduced live loadsupported by a typical interior column at (a) the ground f..
Determine the percent reduction in the required force when : A 50 cm by 20 cm block weighing 150 N is to be moved at aconstant velocity of .8m/s on an inclined surface of 20 degreesfrom horizontal with a friction coefficient of .25.
Determine the reduction of capillary rise if the contact : Determine the reduction of capillary rise if the contact angle representing the adhesion between water and soilmaterial is increased from 30 degrees to 60degrees.
Determine the magnitudes of the other forces : A welded connection is in equilibrium under the action of thefour forces shown. Knowing that Fa=8kn and Fb= 16kN, determine the magnitudes of the other forces.
Determine whatpressure head is needed from the pump : A WTP Operator is trying to size a pump that takes water from a WTPholding tank and sends it to a house on a hill above theplant. The operator's goal is to have 60 psi of waterpressure entering the house. The operator knows that the head loss (major+..
Determine the tension in the support cable : A sailor is being rescued using a boatswain's chair that issuspended from a pulley that can roll freely on the support cableACB amd is pulled at a constant speed by cablle CD

Reviews

Write a Review

Civil Engineering Questions & Answers

  Determine what must be the magnitude of t

if the resultant of the 1000 lb vertical force and the tensile force T in the cable is to be in the direction of the boom OB, what must be the magnitude of T

  Determine the quantity of sludge wasted daily

An activated sludge system operates at a flow rate (Q) of 400 m3/day with an incoming BOD (So) of 300 mg/L. Throughout pilot plant work, the kinetic constants for this system are determined to be Y = 0.5 kg SS/kg

  Provide expression for velocity and acceleration of airplane

The path of the airplane is described by the equation y=kx^2, where k=6 x 10^-4 m^-1. Provide the expression for the velocity and acceleration of the airplane when x=390m. Express the velocity in m/s and the acceleration in m/s^2.

  Determine what percent of particle are retained in clarifier

if the settling velocity of a particle is 2.8 mm/s and the overflow rate of an upflow clarifier is .56 cm/s what percent of the particles are retained in the clarifier

  Compute the allowable load on a column with fixed ends

compute the allowable load on a column with fixed ends if it is 5.45 meters long and made from an S150 x 18.6(S6 x 12.5) beam. The material is ASTM A36 steel. Use the AISC formula.

  What are the interface design boundaries and issues

what are the interface design boundaries and issues for the design and installation of a new toilet for a building

  How many holes are required to break 250000 tons

Conduct a powder factor design for the following conditions: -Rock is iron ore; density is 5370 lb/cubic yards -Rock swells 60% from in situ when broken -Bench height is 45ft -Drill hole diameter is 12.25 inches

  Calculate the volumetric flow rate inside the hose in units

The hose has an inside diameter of 2 inches. If viscous effects are neglected (inviscid/frictionless flow) and the hose outlet is 10 feet below the surface of the pond, calculate the volumetric flow rate inside the hose in units of gallons per min..

  Determine the axial and hoop stresses at the lower end

Determine the axial and hoop stresses at the lower end of the vessel. A standpipe 12 ft in diameter and 50 ft tall is being con- structed for use as a storage tank for water with a specific weight of 62.4 lb/ft3. The wall thickness of the vessel is..

  Express the approximate alkalinity of the water

A water sample has bucarbonate concentration of 220 mg/l ( HCO3- )and the PH of the water is 7.9 > Express the approximate alkalinity of this water as mg/l of CaCO3

  Compute seepage velocity and estimate the hydraulic gradient

A tracer dye is injected into a 55-ft thick sandy gravel confined aquifer which has a hydraulic conductivity of 1.2 x 10^-3 ft/s. The dye appears 14 days later in an observation well 75 ft away from the injection point.

  Determine the inlet and exit tempertures and exit quality

A steady flow of refrigerant 134a enters a throttling valve in a refrigeration unit as a satrurated liquid with a pressure of 150 psia. The refrigerant is discharged with a pressure of 40 psia.

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