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A homogeneus cable of a lenght L and uniform cross section is suspended from one end. A. denoting by p the density (mass per unit volume) of the cable and by e its modulus of elasticity. determine the elongation of the cable due to its own weight. B. show thet the same elongation would be obtained if the cable were horizontal and if a force equal to half of its weight were applied at each end
At the same instant the frame h, not the horizontal blade, rotates about a vertical axis with a constant angular velocity w=0.9 rad/s, measured relative to h
The Rappahannock River near Warrenton, VA has a flow rate of 3.00 cms. Tin Pot Run (a pristine stream) discharges into the Rappahannock at a flow rate of 0.05 cms
a whirlpool is modeled as the combination of a free and a forced vortex. the maximum velocity in the whirlpool is 10 m/s, and the radius at the juncture of the free and the forced vortex is 10m.
concrete weights 23.5 knm3 and water weights 9790 nm3. coefficient of friction between the dam and foundation is 0.55.
The average volumetric water content is 0.40 over the upper 4 meters and 0.30 over the remaining 3 meters above the water table and the net infiltration rate (Darcy velocity) is estimated to be 22 cm/yr.
determine the components of the 800 lb force f along the oblique axes a and b. also, determine the projections of f onto the a and b axes
A pump of 80% efficiency lifts water from one large open tank to another; the difference in water surface elevations is 20 feet. The pipe is relatively smooth (f = 0.0122), and has 3 elbows, each with a loss coefficient of 2/3.
A rectangular plata 5 ft by 4 ft is at an angle of 30 degrees with the horizontal, and the 5-ft side is horizontal. Find the magnitude of the force on one side of the plate and the depth of its center of pressure when the top edge is 1 ft below the w..
Three stock car drivers are racing around a circular bend. They are each circling the bend at different radii: r(1)=249 m , r(2)=255 m , and r(3)=261 m . At a given instant, all three are traveling at the same transverse rate of rotation
A chemical mixing basin is to be designed to blend chlorine and treated wastewater. The basin flow is 700 gallons per minute and the basin dimensions are 5 feet by 5 feet by 5 feet water depth.
8 Forces of 10.0 N north, 20.0 N east, and 15.0 N south are simultaneously applied to a 4.00 kg mass as it rests on an air table. Determine the magnitude and direction of the object's acceleration.
If the coefficient of static friction between the man's shoes and the pole is u=0.6, Determine the minimum coefficient of static friction required between the belt and the pole at A in order to support the man.
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