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1. Determine the force in the hydraulic cylinder AB and the magnitude of the pin reaction at O for the position shown. The bucket and its load have a combined weight of 4000 lb with center of gravity at G. You may neglect the effect of the weights of the other members.
2. The power unit A of the tractor-scraper has a mass of 5.4 Mg with mass center at G1. The fully loaded trailer-scraper unit B has a mass of 22.7 Mg with mass center at G2. Positioning of the scraper is controlled by two hydraulic cylinders EF, one on each side of the machine.
Calculate the compression F in each of the cylinders and the magnitude of the force supported by each of the pins at H, one on each side. Assume that the wheels are free to turn so that there are no horizontal components of force under the wheels.
a sail plane with a lift-to-drag ratio of 25 flies with a speed of 50 mph. it maintains or increases its altitude by
during a steady flow processdry saturated steam at 450 psia expands in a turbine to 10 psia. the mechanical efficiency
1 current airbag regulations specify that they must only pass a test designed to protect a 175 pound male who is not
two astronauts are 1.2 m apart in their spaceship. one speaks to the other. the conversation is transmitted to earth
a closed system consisting of 2lb of a gas undergoes a process during which the relation between pressure and volume is
air conditioning on a university campus is provided by chilled water 10oc pumped through a main supply pipe. the pipe
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In a car engine gasoline (assume octane C8H18) is evaporated and then mixed with air in a ratio of 1:15 by mass. In the cylinder the mixture is at 750 kPa, 650 K when the spark fires. For that time find the partial pressure of the octane and the spec..
a refrigerator in a laboratory uses r-22 as the working substance. the high pressure is 1200 kpa the low pressure is
air at a velocity of 3 ms and 20 degrees c flows over a flat plate along its length. the plate is 100cm long 50 cm wide
An ideal gas refrigeration cycle using air as the working fluid is to maintain a refrigerated space at -23°C while rejecting heat to the surrounding medium at 27°C. If the pressure ratio of the compressor is 3, determine
The tank cover is airtight, and the pressure above the water surface is 2 atm gage. The system is at sea level. Determine the max height to which the water stream could rise.
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