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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.
A thin tube of 1/8 in thickness has a mean diameter of 6 in. What is the maximum torque the tube can transmit if the allowable normalstress in compression is 10 ksi?
Why is the anchorage capacity of a standard hook not increased by extending the bar well beyond the end of the hook?
Sled and rider with a total weight of 200 lb travel down smooth slope defined by equation y=x^2/20. At x=40 ft the sled's speed is 10 ft/s. At x=40 ft determine rate of increase of speed and the normal force which the slope exers on the sled. Neglect..
A W16 x 36 simply supported beam is 30 ft long and supports auniform dead load of 970 lb/ft, a roof live load of 240 lb/ft and asnow load of 270 lb/ft. Is this beam adequate to support the load
Determine the values of S and Z and the shape factor about the horizontal x axes. Use the web and flange dimensions given in the AISC Manual for making these calculations.
A three span continuos beam has spans of 27, 30, 27 feet, total unfactored dead loads are 2,600 pounds per linear foot, unfactored live loads are 2,000 pounds per linear foot. For load combination 1.2D + 1.6L
Undrained shear box tests were carried out on a series of soil specimens with the following results:Total normal stress (kPa) Total shear stress at failure (kPa)
A sample of clay was obtained from a point below the water table. An oven-drying test performed on this sample resulted in the following data:
Determine the elastic and plastic section modulus of the I-beam. The axis runs through the center of the beam on both x and y axis (completely symmetrical). Beam properties: h= 12inches tf= 0.5 inches bf= 6 inches tw= 0.25 inches
The motion of a particle is defined as x=t^2-8t+7 and y=0.5t^2+2t+4, where x and y are in meters and t is in seconds. Determine the magnitude of the smallest velocity reached by the particle, and the time, position, and direction of that velocity.
Five $1,000 bonds having a bond rate of 8% per year payable quarterly are pur chased for $4,940 and kept for 6 years, at which time they are sold. Determine the selling price that yields a 6% effective annual return on the investment.
A 10 feet thick clay that was unsaturated with a unit weight of 108 pcf and a water content of 20% gets saturated and also swells by 20% due to rain. G=2.70.
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