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A concentric cylinder viscometer is driven by a falling mass M connected by a cord and pulley to the inner cylinder, as shown. The liquid to be tested fills the annular gap of width a and height H. After a brief starting transient, the mass falls at constant speed Vm. Develop an algebraic expression for the viscosity of the liquid in the device in terms of M, g, Vm, r, R, a, and H. Evaluate the viscosity of the liquid using: M = 0.10 kg r = 25 mm R = 50 mm a = 0.20 mm H = 80 mm Vm = 30 mm/s
determine the effective spring constant of the following sandwich of materials under compressive load. all are
The top of a car has an area of 4 m2 and is at a temperature of 40 C. It’s speed is 40 mph. At what rate will it lose heat to surrounding air at 10 C if heat transfer coefficient is 400 W/m2C?
A tank with a fixed volume contains 1 kg of dry air at 200oC . If 200 kJ of heat is added to the tank determine the final temperature and change in entropy.
The pilot of an airplane reads the altitude 3000 m and the absolute pressure 58 kPa when flying over a city. Calculate the local atmospheric pressure in that city in kPa and in mm Hg.
a man is changing his tire at the top of a hill. he is rolling the spare at 4.83 fts when he loses control and the
a 5 ft3 tank containing steam at 14.7 psia 1 quality is fitted with a relief valve. heat is transferred to the tank
a piston-cylinder assembly initially contains 0.5 m3 of air at 102 kpa and 90oc. the air is now compressed to 0.2m3 in
piston cylinder device contains 0.06 m3 of saturated water vapor at 350 KPa pressure. Determine the temperature and the mass of the vapor in.
The weight W causes a tension of 100lb in cable CD. If d= 2ft, what is the momentum about the z axis due to the force exerted by the cable CD at point C?
a tank with a volume of 0.142 m3 is initially evacuated. the tank develops a small hole. air from the surroundings
Design an aluminum cantilever beam section on which the force is applied to withstand impact movement up and down 3.0 inches off the ground and back for a life of 8(104) cycles.
calculate the size of defect that will result in fast fracture
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