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An electric motor weighing 750 lb and running at 1800 rpm is supported on four steel helical springs, each having eight active coils with a wire diameter of 0.25 in. and a coil diameter of 3 in. The rotor has a weight of 100 lb with its center of mass located at a distance of 0.01 in. from the axis of rotation. Find the amplitude of vibration of the motor and the force transmitted through the springs to the base.
the initial velocity v0 of a hockey puck is 105 mih. determine a the largest value less than 45deg of the angle a for
A 12 Volt battery is charged by supplying 3 Amps over a period of 6 hours. What is the change of energy stored in the battery if the battery loses 400kJ of heat during charging.
Air (assumed to be an ideal gas) is contained in a piston-cylinder assembly at an initial state of 1 bar with a volume of 1 m3. The mass of air contained in the cylinder is 1 kg. During any expansion or compression of the air, the pressure remains co..
The power P required to drive a fan is believed to depend on density p, flow rate Q, impeller dia. D, and angular veloctiy w in Hz. Determine by dimensional analysis, the general expression for dependence of P on other variables.
In Fig there are 125 ft of 2-in pipe, 75 ft of 6-in pipe, and 150 ft of 3-in pipe, all cast iron. There are three 90° elbows and an open globe valve, all flanged. If the exit elevation is zero, what horsepower is extracted by the turbine when the ..
1 consider the diagram below where a pump is used to draw water from a lake to feed an irrigation system.a which of the
A quick return mechanism is to be designed with a time ratio=1.22 and a cycle time of 0.2sec. What is the required crank speed (rad/s)? What are theta 1 and theta 2?
a for a rectangular coordinate system we developed the navier stokes equation for vx. now reduce that equation to
propane vapor enters the valve at 1.5 mpa 70 c and leaves at 0.5 mpa. if the propane undergoes a throttling process
the 2000 lb load can be moved along the beam bd to any position between stops at e and f. knowing that sigmaall6ksi for
A 10 inch long cantilevered beam has a 1” by 1” square cross section. The load at the end of the beam cycles from 0 lbs to 300 lbs. determine the stress. Determine the slenderness ratio and column constant of a 38” long steel column that has a 1.5 in..
Consider a simply supported beam of length 50 ft subjected to a uniformly distributed downward load of 10 kips/ft from x=10 ft to x=40 ft and concentrated downward loads of 100 kips at x=10 ft and x=40 ft. Determine the shear and moment diagrams from..
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