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An elevator is hung by a steel rope. The rope has a cross-sectional area of 250mm2 and a modulus of elasticity of 70 GPa. the upward acceleration when the elevator starts is 4 m/s2. the rope is 100m long and the elevator weigh 1000 kg. determine the stress in the rope, the eleongation of the rope due to the elevator weight and etra elongation due to acceleration ?
fine pearlite and a small amount of martensite are found in a quenched 1080 steel. what microstructure would be
a refrigerant 134a at 140 kpa and -10 degree celcius is compressed by an adiabatic 16kw compressor to an exit state of
Determine the forces in members DE,DF, and EF of the scissors truss shown. Also, state whether the members are in tension or compression. Note that the 400 lb force is directed along the line BF and the 800 lb force is parallel to line BF.
At a site at 5000ft (1500m) air is cooled from 80F (27C) dry-bulb temperature and 75F (24C) wet-bulb temperature to saturation at the 55F outlet of a cooling coil. How much water is removed? How much latent heat is removed and how much sensible heat...
A drawn, thin -walled tube has plastic (orthotropic) anisotropy. The axial direction of the tube is similar to the rolling direction of anisotropic sheet metal. The tube diameter is 3 inches and the wall thickness is 0.040 inch.
propane in a steel bottle of volume 0.1 m3 has a quality of 10 at a temperature of 15 c. use the generalized
The plate is submerged in a liquid is a vertical position with the parallel sides horizontal and the shorter parallel side at the top and exactly in the surface of the liquid. The static moment of the plate with respect to the surface of the liqui..
for compressible flow if a pressure vessel is full of a compressible fluid at pressure p. what equations would you use
the total external force on an object is f 10t i 60 j lb. at t 0s the objects velocity is v 20 j fts. at t 12 s
a constant-volume tank contains 10 lbm of ammonia initially at 30 lbfin2 and 80degf 539.67degr. the ammonia is then
the 3 kg ball is thrown so that it travels horizontally at 10ms when it strikes the 6 lb block as it is traveling down
Consider a metal single crystal oriented such that the normal to the slip plane and the slip direction are at angles of 43.1
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