Mechanical and Materials Engineering Homework Solutions

Cavitation Problem

A sphere 1 foot in diameter is moving at a depth of 10 feet below a water surfacewhere the water temp is 50 degrees F. At what speed will cavitation first appear? Please show work and any assumptions.

Various mechanical engineering problems

Engineering Mechanics 1) The horizontal bar represented in figure is acted upon by the four vertical forces f1,f2,f3, and f4, whose location and characteristics are shown. Calculate the horizontal distance from point O at the base of F4 and horizontal line to the line of action of the resultant of the given forces. F1=400 ...continues

Flow/momentum Problem

A hot gas stream enters a uniform diameter return bend as shown. The entrance velocity is 100 f/s, the gas density is .02lbm/cubic ft. and the mass flow rate is 1 lbm/cubic ft. The gas is cooled before exiting the bend ans exits the bend at a density of .06 lbm/cubic ft. The pressures at the entrance and exit of the bend are equ ...continues

Fluid dynamics Problem

A closed tank full of a fluid of sp gr. 1.3 is accelerated downward at 2/3g and to the right at 1g. The dimensions of the tank are L=2.5m and H = 3m The tank is labeled as follows: Upper Left corner =D, Upper Right Corner =A , Lower Right Corner = B, Lower Left Corner = C. Find a) The pressure at point B - the pressure at po ...continues

Siphon

(See attached file for full problem description) --- A=30m, B=32m, C=27m, D = 26m The fluid is Water. Given the siphon system above; the head loss between the inlet and point B (highest point) is ¾ of the velocity head. The head loss in the pipe itself between B and the end of the pipe is ¼ of the velocity head. The p ...continues

Fluid Dynamics Prob

(See attached file for full problem description with diagram) Please show work and give answer in vector form --- A vane on the moving cart deflects a 10 cm jet of water as shown. The initial speed of the water jet is 20 m/s and the cart moves at 3 m/s. The vane splits the jet evenly (1/2 at 45º and 1/2 at 90º) ...continues

Fluid dynamics Problem

(See attached file for full problem description with diagram) --- A closed tank full of a fluid of sp gr. 1.3 is accelerated downward at 2/3g and to the right at 1g. The dimensions of the tank are L=2.5m and H = 3m The tank is labeled as follows: Upper Left corner =D, Upper Right Corner =A , Lower Right Corner = B, Lower Lef ...continues

Surface Stress Problem

The upper plate (plate 1) is moving to the right with a velocity V, the middle plate (plate 2) is free to move laterally under the action of the viscous forces applied to it. Assume steady state conditions; derive an equation for the velocity of the middle plate (plate 2). Assume the area of oil contact(Area = .9) is the same fo ...continues

The results of a constant-pressure filtration test are a table of volume of filtrate per unit area of filter versus time.

The results of a constant-pressure filtration test are a table of volume of filtrate per unit area of filter versus time. See attached file for full problem description.

Fluid Mechanics

(See attached file for full problem description)

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