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A 60-foot-long, 950-lb gin pole used to raise sections of a communication tower is suspended by a standard steel cable of 0.110-in.2 cross section with an effective modulus of elasticity of 12 x 106 psi. As the gin pole descends at a constant speed of 30 ft/min, an accident causes the top of the cable, 70 ft above the gin pole, to stop suddenly. Estimate the maximum elongation and maximum tensile stress developed in the cable.
The 3-kg uniform disk oscillates about the pin at A. The pin is lubricated with heavy grease, which gives rise to rotational resistance equivalent to a viscous damping couple Md = -cθ?, where c is a constant.
consider a horizontal pipe with a constant diameter. water constant density p 1000 kgm3 enters the pipe at
Referring to the thermal circuit diagram of Figure 9.7 for the thermal storage (Trombe) wall building, construct appropriate thermal circuits for (a) attached sunspace, (b) thermal storage, and (c) direct gain buildings.
consider a 4-engine aircraft 2 on each wing where the probability of an engine failure is 0.001. assume that the
a ductile material has a yield strength of 280 mpa. determine the factors of safety corresponding to yielding for the
A simple ideal Brayton cycle has a pressure ratio of 6. The working fluid enters the compressor at a pressure of 100 kPa and a temperature of 300 K. The temperature at the end of the combustion process is 1273 K. applying the cold air-standard assump..
the total electrical generating capacity of the united states was about 1039137 mw in december 2011. assuming there
Unit BE1405 - Advanced Materials Technology - Composite Materials and Material Performance - Explain the strengths and limitations of thermosetting and thermoplastic resins in a composite material. Refer to specific resins in your answer and includ..
Determine (a) the resultant couple acting on the plate if a = 8 in., (b) the value of a so that the resultant couple acting on the plate is 480 lb•in. clockwise.
In computer security terms, explain the differences between an attack and a threat.
It is now 1923, and you are working for Thomas Edison in his New Jersey research laboratory.- Write and solve a thermodynamics problem.
one kg of water vapor at 200 kpa fills the 1.1989 m3 left chamber of a partitioned system. the right chamber has twice
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