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A gripper with 4 vacuum cups has been design to lift the automoble front window glass during car assembly. Determine the diameter in inches of each vacuum cup if the glass weights 23 pounds, the vacuum is 0.7 atmosphers, and a 40 percent safety factor is used
a 20 ft3 tank contains air at 1 atm and 70f. a valve is opened and fresh air enters the tank at a constant mass flow
Obtain the general solution for the temperature distribution in the tube. In a practical application a limit would be placed on the maximum temperature that is permissible at the insulated surface (r = r2). Specifying this limit as Ts,2, identify ap..
consider two reversible refrigerators operating in series. the first refrigerator removes heat at the rate of 250 kw
determine the designe power. An output speed of 175 RPMis specified. Determine: a) number of teeth on the small sprocket, b) number of teeth on the large sprocket, c) lubrication type required, d) the required length of chain (in inches) if the ce..
rope bca passes through a pulley at point c and supports a crate at point a. rope segment cd supports the pulley and is
a spring having an unstreched length of 2ft has one end attached to a 10lb ball. determine the angle of the spring when
determine the allowable current in a 10 gage 2.59 mm diameter copper wire that is insulated with a 1 cm - o.d. layer of
Consider a small simple Rankine Power cycle which produces 600kW power from an electric generator with an efficiency of 95%. The steam leaves the boiler at 1250psia as superheated steam and leaves the turbine at 2 psia with a quality of 90%.
four forces are applied to a W200x35.9 rolled beam as shown. determine the principal stresses and maximum shearing stress at point a.
The 1200-lb trunk has a cen- ter of gravity at G.The felling notch at Ois suf?- ciently large so that the resisting moment there is negligible.
a regenerative steam cycle operates between the limits of 80 bar 540oc and 0.05 bar. if only one extraction from the
consider steady heat conduction in a plane wall whose left surface node 0 is maintained at 40 degrees c while the right
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