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The electric motor at A exerts a torque of 800N.m on the steel shaft from A to D. This has a torque of -300N.m at B and -500N.m at C. the dimensions are
shaft(a-b)=0.4m
shaft(b-c)=0.6m
shaft(c-d)=0.3m
Design specificaions require that the diameter of the shaft be uniform from A to D and that the angle of twist between A to D not exceed 1.5 degrees.
Knowing that the masximum shear stress must not be greater than or equals to 60Mpa, and G= 77GPa, determine the minimum diameter shaft that can be used.
Water flows in a river. At 8 a.m. the flow past bridge 1 is 2150cfs. At the same instant the flow past bridge 2 is 1800 cfs. At what rate is water being stored in the river between the two bridges at this instant? Assume zero seepage and negligible e..
A bank is offering to sell 6-month certificates of deposit for $9800. At the end of 6 months, the bank will pay $10,000 to the certificate owner. Compute the nominal annual interest rate and the effective annual interest rate
How do you determine the cross-sectional area of the concrete and steel and the stresses in each if the column deforms .01 inch while carrying 100 K load? The cross sectional area is 15 inch and column height is 10 feet.
A natural channel that is clean and irregular(n= 0.040) has a bottom width of 15 ft m, side slopes of 6:1 (H:V) and a bottom slope of 0.0002. Using Manning's equation, determine the normal depth in the channel for a discharge of 720 cfs.
A 2-ft diameter circular pipe has a Manning's n of 0.013 and a bed slope of 2.0 X 10^-3. What is the uniform flow rate in this pipe if it is completely full (Qf) in ft^3/s? What is the centerline uniform water depth (y0) in the channel if the flow, Q..
A car dealership offers $2000 cash back; financing at 3.49% APR for 60 months or 0% APR for 60 months when you purchase a car. What is the break even point and when would it be better to choose one option over the other.
Let X be a uniformly distributed continuous random variable ranging between 5 and 8, X ~ U[5 , 8]. Variable Y is a function of X: Y: h(X)= 2X^2+1 a. Determine the PDF of Y. b. Find the expected value of Y.
the car weighs 2450 lb, the mechanical efficiency of the drivetrain is 90% and the wheel radius is 14 inches. the base engine develops 200 ft-lb of torque, and a modified version of the engine develops 240 ft-lb of torque.
A film of newtonian liquid folws down the outside surface of avertical cylinder of radius R. the flow is steady, laminar and the thickness of the film is constant.
A spring is used to stop a 50 kg package which is moving down a 20 degree incline. the spring has a constant of 30kN/m and is held by cables so that it is initally compressed 50mm
A rectangular channel carries discharge of 10 m^2/s per unit width, with a sluice gate. Calculate the flow depth y3, if a hydraulic jump forms downstream of the sluice gate when y1 = 20 m.
The mass of the compacted soil is 1.91 kg, and its moisture content is 14.5%. Using a specific gravity of solids of 2.66, compute the degree of saturation, density (kg/m3), unit weight (kN/m3), unit weight (kN/m3) and dry unit weight of this compa..
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