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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)
An uneven or abnormal symmetry observed following the stakeout of a horizontal curve is usually an indication of a:
A rural town with sewered population of 4,500 has a daily wastewater flow of 1,590 m3/day with an average BOD of 280 mg/L including industrial wastes. The industrial discharges to the municipal sewers are 57 m3/day at 1,800 mg/L BOD from a slaughterh..
A pneumatic-tired tractor with a 354 - hp engine has a maximum speed of 3.6 mph in 1st gear. Determine the max. rimpull of the tractor in each gear if the engine effieicency is 91%.
To imagine the diagram, the collar at point A (unstretched) is on the same x-axis as the anchor @ C, while the collar point B (stretched) is located downwards-left to point A, forming a 30 degree angle with the y-axis (vertical). In other words, the ..
A pendulum consists of a slender rod, AB, of weight Wr= 8.60 lb and a wooden sphere of weight Ws= 21.7 lb .(Figure 1) The length of the rod is d = 7.70 ft and the radius of the sphere is R = 0.500 ft
A thin flat plate is 12 m long and 8 m wide. The air density is 1.23 kg/m3. a) What is the maximum velocity for the boundary layer to remain laminar over the entire plate (the transition occurs at the end of the plate)
two straight sections of freeway cross at a right angle. at the point of crossing the east-west highway is at elevation
A plane flow field is developed by the addition of a free vortex and a uniform stream in the positive x direction. If the vortex is located a distance a from the origin, determine the pressure variation in the flow field
a ship has a cross-sectional area of 4000 ft^2 at the water line when the draft ( depth below the water line of the vessel bottom) is 10 ft. How many pounds of cargo will result in an increase of draft of 2 in ( specific weight is 64 Ib/ft^3 )
The half life of Uranium-238 is 4.47 billion years. What is the reaction rate coefficient assuming first order decay
A bicycle rider would like to compare the effectiveness of candilever hand brakes (use figure a) versus V brakes (figure part b). (a) Calculate the braking force Rb at the wheel rim for each of the bicycle brake systems.
A person (mass of 80g) is lifted upward by a 2 cm diameter safety rope with constant velocity. What is the tensile stress in the rope
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