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The 50-lb load is hoisted by the pulley system and motor M. If the crate starts from rest and by constant acceleration attains a speed of 15 ft/s after rising s = 6 ft, determine the power that must be supplied to the motor at this instant. The motor has an efficiency of 76 %. Neglect the mass of the pulleys and cables.
A cylindrical tank 5-m in diameter is filled with water to 3-m depth. A very short horizontal pipe with 20-cm diameter and rotary valve is used to drain the tank from the bottom.
Straight pipe, pump head=100 ft, pipe diameter=4inches, velocity is 10 ft/sec, no elevation changes. Water at 20C. What is the length of the smooth pipe
An 8-inch water main with a flow rate of 14 ft3/sec raises 100-feet. At the beginning of the main the pressure is 110 psig and drops to 50-psig at the end. For this water main calculate the head loss
The power, P, required by an agitator in a tank is a function of the following variables, diameter of the agitator, D, Frequency of the impeller rotation, w (1/s), Viscosity of liquid, u (lbss/ft^2) and the density of the liquid ,p (slugs/ft^3)
The member is supported by a pin at A aand a cable BC. If the load at AD is 300 lb, determine the x,y,z components of reaction at the pin A and the tension in cable b c
According to the Owner's Manual for the Gateway Arch by William Thayer, the construction made use of the following mathematical equation. y(x) = a + b * cosh( c * x) a= 693.8597 b= -68.7672 c=.010033
Five years ago, GSI, an oil services company headquartered in Texas, issued $10 million worth of 12% 30-year bond with the dividend payable quarterly. The bonds have a call date of this year if GSI decides to take advantage of it.
If the difference in weight between the two baskets must greater than 15 lb they will not have the strength to operate the pulley. The King weighs 195 lb, the princess weighs 105 lb, and the prince weighs 90 lb.
how far back from the front axle would the center of gravity have to be to ensure that the maximum tractive effort developed for front- and rear- wheel-drive options is equal (assume that all other variables are unchanged)
What is the overall specific gravity of a sample initially packaged with a moisture content of 3.5% below the optimum, then saturated (Assume that the soil sample can be compressed fully saturated with water without the occurrence of variation in ..
A steel bar is attached to a wood support beam with four 20 mm diameter lag screws. The steel bar is 75-mm-wide by 6-mm-thick. For the steel bar, the yield strength is 260 MPa and the ultimate bearing strength is 350 MPa.
The engineer in charge of this project investigated severla alternatives to cool the exhaust gas and has concluded that the two most practical solutions would be either the installation of a waste heat boiler or the installation of a spray injecti..
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