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An equiangular strain gage rosette is mounted on a free and unloaded surface of a component. The strains obtained from the rosette are ?0 = -0.0005 m/m, ?120 = +0.0003 m/m, and ?240 = +0.001 m/m. Gage orientation angles are measured counterclockwise. Find the magnitude and orientation (with respect to the 0° gage), of the principal strains and check the results by plotting a Mohr circle.
a glass tube is inserted in mercruy. what is the upward force on the glass as a result of surface effects? constant
A turbine rotor of mass 200 kg has an unbalanced mass of 15 kg. It is supported on a foundation which has an equivalent stiffness of 5,000 N/m and a damping ratio of If the rotor is found to vibrate with a deflection of 0.1 m at resonance
two brass rods used as compression members each of 6-ft effective length have the the same cross sections.theround rod
air is compressed adiabatically from 14.7 psia 70 to 58.8 psia and 76 btulbm of work is required. neglecting changes
When the support undergoes the vertical movement y(t) = Y sin 18t (t is the time in seconds), the relative amplitude of the steady-state vibration of the mass m is Z = 10 mm. Determine the amplitude Y of the support displacement.
the combustion products in an internal combustion engine undergo an expansion process from an initial volume of 0.007
consider oxidation of a metal plate half-thickness x0 0.02m. after 800hours 2.88e6 seconds at 900 c the oxide layer
A cylindrical pressure vessel, with a diameter of 40cm and a wall thickness of 10mm is made of steel (isotropic, with Young's modulus = 200GPa; Poisson's ratio = 0.28) and is pressurized to 20MPa. The longitudinal and hoop stresses in the wall, σl an..
problem 1 a 2.5 lbf block b is moving with a velocity vo of magnitude vo 6fts as it hits the 1.5 lbf sphere a which is
a liquid-vapor phase change process in microgravity conditions is carried out sufficiently slowly so that a one
If this exchanger is used to cool this same oil entering the exchanger at 210°F at a rate of 225 lbm/hr, what is the exit temperature of the oil if the water inlet temperature and flow rate are kept constant?
The motor shown in the following figure supplies a torque of 380 lb.ft to shaft BCD. Determine the minimum permissible diameter of the shaft, if shafts are available with diameters in increments of 1/8 in
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