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The acceleration of the 50-kg carriage A in its smooth vertical guides is controlled by the tension T exerted on the control cable which passes around the two circular pegs fixed to the carriage. Determine the value of T required to limit the downward acceleration of the carriage to 1.2 m/s2 if the coefficient of friction between the cable and the pegs is 0.20. (Recall the relation between the tensions in a flexible cable which is slipping on a fixed peg T2 = T1eπβ)
A 3220-lb car enters an S-curve at A with a speed of 60 mi/hr with brakes applied to reduce the speed to 45 mi/hr at a uniform rate in a distance of 300 ft measured along the curve from A to B.
What is the maximum length of trench that can be excavated by hand economically rather than by a trenching machine. It will cost $900.00 to transport a trenching machine to the job and back to the storage yard.
What fraction n of the weight of the jet airplane is 15 the net thrust (nozzle thrust T minus air resistance R) required for the airplane to climb at an angle θ with the horizontal with an acceleration α in the direction of flight?
he City of Leeds (England) discharges about 1.4 m3/sec to the Aire River. Without the wastewater discharge, the river flow rate would be 12.7 m3/sec. Given that BOD(river) = 3.0 mg/L and BOD(wastewater) = 30.0 mg/L
Provide a thorough understanding of Requirements and important factors in an engineer's role to create and maintain sustainable environment via a real-life scenario project
A concrete mix with a 3-inch slump, w/c ratio of 0.50 and a sand with a fine modulus of 2.4 contains 1700 lb/cubic yard of coarse aggregate. Compute the required weight of coarse aggregate per cubic yard.
A 2.1 m diameter sewer is laid on a slope of 0.0032 m/m. If the Manning's Coefficient for the sewer is equal to 0.015 at all depths and flows, determine flow (Q) and velocity (V) when the sewer is flowing full,
A cyclone has been designed with an inlet width of 10cm and an inlet height of 6cm. The height of the main upper cylinder is 16cm and the height of the lower cone is 16cm. The inlet gas velocity is 16m/s and the particle density
Water is pumped from the tank 1 to tank 2 as shown below. The suction side pipe is nominal 4, schedule 40, 24 ft long, f = 0.018, and the discharge pipe is nominal 3 ½ , schedule 40, f = 0.019, and is 400 ft long
Determine the amount of extra heat that must be supplied to the gas in the cylinder which is maintained at constant pressure to achieve this result. Assume the molar mass of the gas is 25.
Determine the relationship which governs the velocities of the three cylinders, and state the number of degrees of freedom. Express all velocities as positive down.
A piston-cylinder assembly containing 1/4 kg of a gas undergoes a constant pressure process at 5 bar beginning with a specific volume of 20 m^3/kg. for the gas in the system the work is -15 kj. determine the final volume of the gas in m^3
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