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The two simply supported timber beams are mounted so that they just make contact at their midpoints when unloaded. Beam AB is 3 in. wide and 6 in. deep; beam CD is 2 in. wide and 10 in. deep. Determine the contact force between the beams when the 3000-lb load is applied at the crossover point.
Describe a physically-plausible situation where the Reynolds number is (a) 1 (b) 10,000 (c) 1,000,000. For flow in tubes/pipes/ducts, use Red For flow over/along long/blunt objects, use Rel.
Calculate the static pressure (in psi) of a moving mass of air, if the ambient air pressure is 1 atms (14.69 psi) and the velocity of the moving mass of air is 100 feet/sec.
Three small fans are located near each other at 1.5 m above the ground, and produce an annoying noise in the 250 Hz band. A localresident whose bedroom window is at the same height as the fans and is 80 m away complains about this noise. Measurements..
An adiabatic gas turbine expands air at 1300 kPa and 500 °C to 100 kPa and 127 °C. Air enters the turbine through a 0.2 m2 opening with an average velocity of 40 m/s, and exhausts through a 1 m2 opening. Determine the specific volumes of both inlet a..
an un-stretched spring initially is attached to a horizontal piston round shape. heat is added to the gas until the
Find the bending moment along the portion AB of the rectangular frame shown in Fig. 4.49. One corner A is pinned; the other corner B is supported by rollers. Assume linear elastic behavior.
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 ..
a heat pump keeps the air temperature in a house at a temperature of 22.5 oc. the house is losing heat to the outside
a gas in a piston-cylinder device is compressed through a combination of external force on the piston and cooling in
Consider a metal single crystal oriented such that the normal to the slip plane and the slip direction are at angles of 43.1
the rod of the fixed hydraulic cylinder is moving to the left with a constant speed. determine the corresponding
1. Air enters a horizontal, well-insulated nozzle operating at steady state at 12 bar, 500K, with a velocity of 50 m/s and exits at 7 bar, 440 K. The mass flow rate is 1 kg/s. Determine the net force, in N, exerted by the air on the duct in the..
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