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An engine is mounted on a rigid foundation through four springs. During operation, the engine produces an excitation force at a frequency of 3000 rpm. If the weight of the engine causes the springs to deflect by 10 mm, determine the reduction in the force transmitted to the foundation.
a piston cylinder has r-134a at -20oc 100 kpa which is compressed to 500 kpa in a reversible adiabatic process. find
a hydraulic jump forms in a horizontal trapezoidal channel. the base width is 4m and the side slopes are 45 degrees.
Calculate the natural frequencies and mode shapes of a shaft in torsion of shear modulus G, length l, polar inertia J, and density ρ that is free at x = 0 and connected to a disk of inertia J0 at x = l.
a 50 kg crate resting on a flat smooth surface is acted upon by a horizontal force that varies by the equation f1.5x
A crate of mass 10kg is placed on a ramp elevated at 30 degrees from the horizontal. The ramp is 2m long. The coefficient of static friction is .4 and coefficient of kinetic friction is .3. At the low end of the ramp and oriented parallel to it is a ..
a stone is dropped into a lake causing circular waves whos radii increase at a contant rate of .5 m/s at what rate is the circumference of a wave changing when its radius is 4 meters?
a child of mass 20 kg is standing on a plank inclined at 20 degrees to the horizontal. how much force does the child
What is the convective heat transfer coefficient, h, for A = 0.125 m2, Tb = 200oC, Tf = 25oC and Qc = 8.75W.
An arc welding machine uses a current of 1000A and has a resistance of 0.5Ω. Given that the velocity of the arc is 1500mm/s, calculate the heat input of the welding process
100 kg of liquid water at 25C and 50 kg of ice at 0C are placed in an isolated container. (a) (b) (c) Find the initial volume of the liquid-ice mixture, in m3. Determine the volume after all the ice is melted, in m3. Will the temperature of the li..
a work piece 400 mm x 70 mm in diameter is to be machined. the material has constants n0.23and c250 mmin. disposable
a nylon thread is subjected to a 10-n tension. knowing that e 3.2 gpa that the maximum allowable normal stress is 40
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