# Mechanical Engineering

##### Problem 3.28 in the textbook
Problem 3.28 in the textbook...
##### Determine the forces acting on the members
The member ACF of the frame loaded as shown is connected to the member BCD by means of a smooth peg and slot arrangement. Determine all the forces acting on themembers BCD and ACF.(Ax = Fx = 3.04 kN, Ay = Fy = 2.7 kN; Bx = 6.08 kN; By = 1.8 kN; FC = 8.13 kN)Please show your work....
An 18-m long steel wire of 5-mm diameter is to be used in the manufacture of a prestressed concrete beam. It is observed that the wire stretches 45 mm when a tensileforce P is applied. Knowing that E = 200 GPa, determine the corresponding normal stress in the wire....
##### Determining forces and components of force
In the frame shown, members ACE and BCD are connected by a pin at C, and by the link DE. Determine reaction force at A, the force in link DE for the loading shown, and components of force exerted at C on member BCD.(FDE = 561 N, Cy = 216 N; Cx = 795 N; Ay = 480 N; Ax = 300 N)....
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##### Thermo
Steam at 20 bars is in the saturated vapor state (call this state 1) and contained in a pistoncylinder device with a volume of 0.03 m 3 . Assume the steam is cooled atconstant volume (i.e. the piston is held fixed in place) until the temperature reaches 200 C (call this state 2). Then the steam is e...
##### Calculate the vertical force P required to maintain equilibrium?
The oil drum weighs 620 lbwhen full and has a mass center atG. Calculate the vertical force Prequired to maintain equilibriumof the drum and dolly in theposition shown. The weight of thedolly may be neglected comparedwith that of the drum.Picture: http://tinypic.com/r/2po38fp/5...
##### Thermodynamics question
A gas in a piston cylinder assembly undergoes a compression process for which the relation between pressure and volume is given by PV^n = constant. The initial volumeis 0.1 m^3, the final volume is 0.04 m^3, and the final pressure is 2 bar. Determine the initial pressure, in bar, and the work for th...
##### Thermodynamics
Will rate instantly!Consider an insulated vessel shown below. The vessel has an evacuated compartment separated by a membrane from a second compartment that contains 1 kg of water at175oC, 1 MPa. The membrane then ruptures and the water fills the entire volume, with a resulting pressure of 15 kPa. D...
##### Heat Transfer - Composite Wall
A composite wall of an oven consists of three materials. kA = 20 W/m-K, and kC = 50 W/m-K. LA = 0.30 m, LB = 0.15 m, and LC = 0.15 m. The outside surface temperatureof the oven is 20 C and the inside surface temperature is 613 C. The oven air temperature is 800 C, with a heat transfer coefficient h ...

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