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A square-threaded power screw with single thread is used to raise a load of 25,000lb. the screw has a mean diameter of 1 in and four threads per inch. the collar mean diameter is 1.5 in. the coefficient of friction is estimated as 0.1 both the thread and the collar. (a) what is the major diameter of the screw (b)Estimate the screw torque erquired to raise the load(c)If collar friction is eliminated, what minimum value of thread coefficient of friction is needed to prevent the screw from overhauling.
axial flow coolant pump for one lop pressurized nuclear reactor has 75 m head 6m3s flow rate 1440rpm 800 mm diameter
if the critical resolved shear stress for yielding in aluminum is 240kpa. calculate the tensile stress required to cause yielding when the tensile axis is [001]
a closed tank having a volume of 2ft3 is filled with 0.30 lb of a gas. a pressure gage attached to the tank reads 12
a group of students is developing a plan to deliver water from a lake to a downhill village. the students plan to use a
Identify the mass properties that would be used to determine an appropriate size box to package 60 ABS Plastic (0.038 lb/in3) blanks and to ship them at $1.15 per pound.
torsion lab using aluminum cylinderical specimens1 how would a hollow cylindrical specimen of the same lenght and mass
an industrial water shutoff valve is designed to operate with 40lbs of force and will encounter 150lbs of resistance
Read the titled books Drilling Fluid Engineering Manual. Textbook prepared by M-I Drilling Fluids Co.,1998; Halliburton Cementing Tables. Casing and cement data tables prepared by Halliburton Company.
a standard door into a house rotates about a vertical axis through one side as defined by the doors hinges. a uniform
a rectactangular surface is placed in a vertical position in fresh water with its top and bottom edges horizontal. if
mr. jones plans to purchase a new 18000 automobile. he wants to borrow all the money for the car and repay it in equal
a cycle is characterized by the following three processes process 1-2 is defined to be a constant pressure expansion.
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