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1. How do the magnitudes of the biceps force B and joint reaction J change if the total weight w of the forearm and hand are included in the analysis and are assumed to be uniformly distributed over the forearm length L?
2. Examine and measure the arms of three (or more) of your colleagues and develop average estimates of the distances b and L, and of the L/b ratio.
Determine the forces in members BC and FG of the loaded symmetrical truss. Show that this calculation can be accomplished by using one section and two equations, each of which contains only one of the two unknowns.
Assume that 10,000 spur gears, 11 /8 in. in diameter and 1 in. thick, are to be made of 70-30 brass. What manufacturing method would you consider?
consider a 4-engine aircraft 2 on each wing where the probability of an engine failure is 0.001. assume that the
a hockey player strikes the 0.25 kg puck with an impulse force given by ft 100sin50t n for the duration of 0.04pi
the acceleration of a particle as it moves along a straight line is given by a 2t-1ms2 where t is in seconds. if s 1m
The muffler acts as a resistor with a loss coefficient of KL= 8.5. Determine the pressure at the beginning of the exhaust system if the flowrate is 0.10 cfs, the temperature is 250 °F, and the exhaust has the same properties as air.
Determine the maximum temperature to which water can be superheated at 133 bar without boiling and the temperature to which water vapor can be sub cooled at the same pressure without condensation occurring.
a 50 kg crate rests on a rough horizontal surface with microk0.3. an electrically powered winch is utilize to
The piston is then moved in, and heat is rejected by the air reversibly at constant pressure until the volume is the same as it was initially. Calculate the net heat flow and the overall change of entropy. Sketch the process on a T-s diagram.
nitrogen gas is contained in a rigid 1-m tank initially at 10 bar 300k. heat transfer to the contents of the tank
air initially at 150 kpa 500k and occupying a volume of .02m3 undergoes two processes. first the air undergoes a
a six-cylinder four-stroke spark-ignition engine operating on the ideal otto cycle takes in air at 14 psia and 65
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