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A belt is wrapped around a pulley for 180 degrees. The loose-side belt tension is 100 lb and the coefficient of static friction is 0.30. Calculate the maximum belt tension if motion is impending. Assume A) a flat belt and B) a V-belt with a groobe angle of 50 degrees.
A lagoon with volume 1,200 m3 has been receiving a steady flow of a conservative waste at a rate of 100 m3/day for a long enough time to assume that steady-state conditions apply. The waste entering the lagoon has a concentration of 10 mg/L.
Explain how the different physical characteristics and moisture content of soil lead to the different angles of repose, swell, and shrinkage factors. Explain how these factors affect excavation operations and costs.
Show/formulate the shear and bending moment expressions for each board, and plot/draw the shear and bending moment diagrams of the boards.
a confined aquifer with a transmissivity of 7.0x10^-3 m^2/s and a storativity of 5.0x10^-4 is pumped by two wells 35 m apart. One well is pumped at 7.6 L/s and the other at 15.2 L/s.
The oven exhaust gases are available at 250 F. Assume that the design temperature and residence time have been established as 1300 F and 0.6 sec, respectively. The type of burner used in the process requires outside air at a moass ratio of 12:1
Given this 10-yr record of annual precipitation in inches (28,21,33,26,29,27,19,28,18,22), plot a rough precipitation frequency curve. Tabulate the data to be plotted and show the method of computation. (note: the frequency in percent of years is ..
The maximum wind pressure on the traffic sign is 200 kg/m2. The maximum allowable shear stress is 350 kg/cm2. Design the traffic pole (only vertical element) against torsion knowing that angle of twist at the base should not exceed 6°.
A car travelling at 60 mph in a construction area skids into a stack of concrete barriers. Skid marks leading to the crash measures 150 ft .
A car is traveling at 30 mph on a good, dry pavement at sea level. The front-wheel-drive car has a drag coefficient of 0.35, a frontal area of 30 ft2 and a weight of 2500 lbs. The wheelbase is 120 inches and the center of gravity is 20 inches from..
If D1 = 60 cm, D2, = 40 cm, D3 = 54 cm, L1 = 400 m, L2 = 450 m, and L3 = 750 m. Assume f = 0.0125 (3 riveted steel pipes). Determine the total flow if the system head loss is 60 m.
general price inflation is estimated to be 3% for the next 5 years, 5% the 5 years after that, and 8% the following five years. If you invest $10,000 at the market rate of 10% for those 15 years,
Determine the horizontal and vertical components of reaction at the pin A and the reaction of the rocker B on the beam. a)Determine the horizontal and vertical components of reaction at the pin A
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