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The crate, of mass 250 kg, hanging from a helicopter (shown in Fig. 2.74(a)) can be modeled as shown in Fig. 2.74(b). The rotor blades of the helicopter rotate at 300 rpm. Find the diameter of the steel cables so that the natural frequency of vibration of the crate is at least twice the frequency of the rotor blades.
Propane is mixed 20% excess air (propane air mixture is initially at 25 C and 2.0 atm) and combusted at atmospheric pressure. It is assumed that the heat transfer between the chamber and the surroundings is negligible. In addition, you may assume tha..
steam enters an adiabatic turbine at pressure 6 mpa temperature 600oc and velocity 80 ms and leaves at pressure 50
ME 406 Manufacturing and Design - Provide type of matrix and fiber with fiber volume fraction. Provide analysis used to choose volume fraction. If computer model is used for analysis then present it.
a cylindrical pressure vessel of diameter 2 m and wall thickness 20 mm is subjected to an internal pressure of 20 bar 2
Compare the moment capacity of the beam in part a with that shown in the figure part b which has two 4 in. ×12 in. joists (nominal dimensions) attached to a 1/4 in. × 11.0 in. steel plate
an ideal gas undergoes a process between two specified temperatures first at constant pressure and then at constant
A volume of 1.8 L of neon gas (monatomic) is at a pressure of 3.4 atmospheres and a temperature of 370 K. The atomic mass of neon is 20.2 g / mol. Calculate the mass of neon gas in SI units.
Beginning with an appropriate differential control volume, obtain an equation that could be used to determine the mean air temperature Tm(x) as a function of distance along the channel. Solve this equation to obtain an expression for the mean temp..
The weight of the air has a negligible effect on the manometer reading.
a 100 pound ball is suspended from a wall by a rope that is pulled asided by a horizontal rope B and held so that rope A makes a angle of 30 degrees with the vertical wall. Find the tension in ropes A and B?
a motorcycle is moving at 30 ms when the rider applies the brakes giving the motorcycle a constant deceleration. during
there are two thermal reservoirs the hot reservoir is at 1200 k and the cold reservoir is at 600 k. if you wanted to
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