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The ladder has a uniform weight of 80 lb and rests against the smooth wall at B. If the coefficient of static friction at A is mu(a)= 0.4, determine if the ladder will slip. Take theta= 60 deg
1) Determine the frictional force acting on the ladder at A.
2) Find the maximum frictional force that can be developed at A.
an ideal rankine cycle with an open-feedwater-heater regenerator operates the boiler at 3 mpa the regenerator at 125
the 3-kg slender rod rotated in a vertical plane about a pivot at b. a spring of constant k 300 nm and of unstretched
the pressure in a steam main is 12 bars. a sample of steam is drawn off and passed through a throttling calorimeter the
compare the thermal efficiency of a two-stage gas turbine with regeneration reheating and intercooling to that of a
for a sensible heater that provides 100000 btuhr and increases the air temperature 35 f determine the volumetric flow
a mixture of methanol and water is to be separated in a flash drum operating at a pressure of 1atm. the feed rate is 25
a peripheral milling operation is performed on the top of a rectangular workpiece that is 650 mm long 50 mm wide and
the 2kg block a and the 5kg block b are initially at rest on the inclined plane as shown. all surfaces in this system
consider the 1-d steady state conduction in a plane wall. the heat flux qx through the wall must be constant. the wall
An open cylindrical tank that is 2 ft in diameter and 4 ft high is full of water. If the tank has a 2 in diameter hole in the bottom, how long will it take for half of the water to drain out, if friction is neglected?
a square flat plate 250-mm on a side is oriented 42deg from the vertical and suspended in quiescent air at 25degc. the
if the axial-flow pump is used to deliver 65000 galmin of 30oc water at 1200 rmin estimate a the impeller diameter b
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