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The flat circular disk rotates about a vertical axis through O with a slowly increasing angular velocity ?. Prior to rotation, each of the 0.60-kg sliding blocks has the position x = 29 mm with no force in its attached spring. Each spring has a stiffness of 390 N/m. Determine the value of x for each spring for a steady speed of 219 rev/min. Also calculate the normal force N exerted by the side of the slot on the block. The force N is positive if it pushes from the side labeled A. Neglect any friction between the blocks and the slots, and neglect the mass of the springs. (Hint: Sum forces along and normal to the slot.)
A coal-burning steam power plant produces a net power of 300 MW with an overall thermal efficiency of 32 percent. The actual gravimetric air-fuel ratio in the furnace is calculated to be 12 kg air/kg fuel.
For a mixture 10 mol % methane 20 mol % ethane 70 mol % butane at 50 degrees Fairenheit determine the bubble point pressure
The last segment of the triple jump tracxk and feild event is the jump, in which the athlete makes a final leap, landing in a sand filled pit. Assuming that the velcity of a 185 lb athlete just before landing is 30 ft/s at an angle of 35 degrees with..
An aluminum rod (1) (E=80 GPa, d=24.5 x 10-6/oC) and a brass rod (2) (E=115 GPa, d=22.0 x 10-6/oC) are connected to rigid supports. The cross-sectional areas of rod (1) and (2) are 4,000 mm2 and 5,000 mm2
a solid shaft of radius r is subjected to a torque T, determine the radius r' of the inner core of the shaft that resists one half of the applied torque (T/2)
Given the following information, determine the required DO concentration in the treatment plant effluent discharge in order to ensure that at no point downstream the DO in the river drops below 4 mg/L
In what sequence are these oxidized compunds reduced by the bacteria, and why is the substrate that is reduced first preferred by the hydrogen acceptor. When do obnoxious odors appear
The cross-sectional geometry of bone varies along its length, although the cross-section can be approximated as hollow and circular, with an average outer diameter of 27 mm and inner diameter of 14 mm
A cylindrical specimen of a metal alloy is stressed in compression. if its original and final diameters are 40.00mm and 40.10mm respectively, and its final length is 120.00mm, compute its original length (L1) if the deformation is totally elastic.
What is the Station and Elevation of the turning point (high point)? What is the Elevation of Station 16+00?
The officer believes the driver is intoxicated and begins accelerating uniformly to 50 mi/h in 8 seconds and maintains a constant velocity of 60 mi/hr, overtakes the motorist 42 seconds after he passed the officer.
What is the span length of a uniformly loaded simple beam with a wide-flange cross section if the maximum bending stress is 12,000 psi, the maximum deflection is 0.1 in, the height of the beam is 12 in
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