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For a tall column resting on the ground, axial stress develops due to the columns weight. (a) Derive the stress as a function of position z measured from the bottom of the column, and the total contraction of the column. Express the results in terms of the column cross-sectional area A, mass density p, modulus E, and height H. (b) Evaluate the maximum stress and total contraction of height for a case of a hollow steel tower that is 70 m tall and has a 3.4 m outer diameter and wall thickness of 25 mm. Density and Youngs modulus of steel is given by 7850 kg/m3 and 200 GPa.
determine the velocity of a detonation wave propagating through an ideal-gas mixture having a constant specific heat cp
1.7 pound-mass of water fills a container whose volume is 3.7ftsup3. the pressure in the container is 70 psia. how do
the displacement of a point on a moving body was measured in each frame of a motion-pcture film. the displacements
the rigid tank in the figure below has a volume of 60 l and initially contains a two-phase liquid vapor mixture of h20
a wad of clay mass m1 with an initial horizontal velocity v1 hits and adheres to the massless rigid bar which supports
You have two metal specimens both of which are cylindrical with a diameter of 20 mm and a length of 200 mm. One is made of titanium alloy with Young's modulus 100 GPa and the other out of stainless steel Young's modulus 200 GPa. Both are subjected to..
a large stationary diesel engine produces 15 mw with a thermal efficiency of 40. the exhaust gas which we assume is air
an alcohol manufacturing facility emits air with 500 ppm ethanol. the air flows out several roof vents at a total flow
0.5 kg of water initially at 400 kPa and 0.3 m3/kg is contained within a piston-cylinder device fitted with retractable stops (initially retracted) so that the water supports the weight of the piston and the force of the atmosphere (state 1). The wat..
the wheel on a press is 25 inches in circumference and there are 5 threads to the inch. how much resistance on the book
a mass of 0.2 kg of saturated refrigerant-134a is contained in a piston-cylinder device at 200 kpa. initially 75 of the
0.89 pound-mass of water fills a 2.0309 ft^3 weighted piston-cylinder device at a temperature of 400 F. the piston-cylinder device is cooled until its temperature is 90 F. Determine the final pressure of the water and the volume.
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