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The rim on the flywheel has a thickness t , width b , and specific weight γ. If the flywheel is rotating at a constant rate of ω , determine the maximum moment developed in the rim. Assume that the spokes do not deform. Hint : Due to symmetry of the loading, the slope of the rim at each spoke is zero. Consider the radius to be sufficiently large so that the segment AB can be considered as a straight beam fixed at both ends and loaded with a uniform centrifugal force per unit length. Show that this force is w = btγω2 r/g.
The maximum wind pressure on the traffic sign is 200 kg/m2. The maximum allowable shear stress is 350 kg/cm2. Design the traffic pole (only vertical element) against torsion knowing that angle of twist at the base
A subsurface detention basin is installed beneath a street to help prevent flooding. Water from the rain is chanelled into the basin and begins to infiltrate into the ground when it reaches 1ft.
determine expressions for the initial angular acceleration of the head and its angular velocity ω as a function of the angle θ of rotation. Assume that the neck is relaxed so that no moment is applied to the head at O.
a storage tank has a diameter of 80 ft, a height of 25ft and contains oil to a height of 15ft. the suction pumps, which can handle 15000bbl/d, are started, but the safety valves are clogged and a vacuum is drawn in the tank.
A pump in a large industrial hall containing 30 liters gasoline breaks down, causing the gasoline to spill into a 3 m2 sump surrounding the pump. The liquid pool is ignited by sparks. Assume the combustion to be 70% effective and the heat loss due..
Determine the hydrostatic force on one side of a vertical clrcular gate of diameter 1.5m when its centre is immersed at a depth of 6m neto-w tne free surface of water in a reservoir.
The void ratio of the compacted fill is specified as 0.7. Four borrow pits are available along with each of the respective void ratios along with the cost per cubic meter for moving the soil to the proposed construction site.
Explain why, and under what conditions, it is reasonable to ignore the change in over small intervals of time.
Find the pmf of D2. One point of this exercise is to convince you that Dn is a useful rv for proving theorems, but not an rv that is useful for detailed computation. It also shows clearly that Dn can depend on more than the first n source letters.
In magnetic tape recording, the tape is subjected to tension while it is guided along its path. Tension in the tape causes elastic deformation that results in slight changes in length of the domains on which information is stored.
The discharge from the Renenutet sugar beet plant causes the DO at the critical point to fall to 4.0 mg/L. The Meskhenet Stream has a negligible BOD and the initial deficit after the river and wastewater have mixed is zero
A 3 m long curved gate is located in the side of a reservoir containing water. Determine the magnitude of the horizontal and vertical components of the force of the water on the gate.
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