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During construction of a highway bridge, the main girders are cantilevered outward from one pier toward the next (see figure). Each girder has a cantilever length of 48 m and an I-shaped cross section with dimensions shown in the figure. The load on each girder (during construction) is assumed to be 9.5 kN/m, which includes the weight of the girder. Determine the maximum bending stress in a girder due to this load.
If the motor draws in the cable at a rate of v = (0.05s3 >2 ) m>s, where sis in meters, determine the tension developed in the cable when s= 10 m. The crate has a mass of 20 kg, and the coefficient of kinetic friction between the crate and the gr..
saturated liquid ammonia is compressed adiabatically in a pistoncylinder. the ammonia starts at 40f and the
metals are usually crystalline and seldom amorphous. most ceramics are crystalline but there are significant examples
The position of a particle on a straight line is s=2t^2-12t5 (ft), where t is in seconds.
a robot unloads a finished component from a machine and places it on a gravity conveyor. the conveyor accelerates from
air is expanded from 2000 kpa and 500c to 100kpa and 50c. assuming constant specific heats determine the change in
air at 14.7 psia and 70 degrees farenheit is compressed adiabatically by a centrifugal compressor to a pressure of 100
1. (a) A sine wave at frequency f= 90 Hz is sampled digitally at sampling frequencies fs=200,160 and 50 Hz respectively. For each case, discuss whether there is aliasing. Also for each case, calculate the aliasing (perceived) frequency.(b) Using EXCE..
a beer distributor incurs a penalty cost of 2 per case of shortage and a 1 charge per case left over in inventory at
At the instant shown, determine the velocity of the piston, the velocity of the point C and the angular velocity of the connecting rod.
1. Natural gas and 100% excess air enter the combustion chamber of the Capstone micro-gas turbine at 400 kPa and 452 °C.
a cylinder made of astm a242 steel is 50cm in diameter and 250mm long and has a wall thickness of 24mm. a round bar of
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