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The signpost of a fast food restaurant consists of a hollow steel cylinder of height h, inside diameter d, and outside diameter D, fixed to the ground and carries a concentrated mass M at the top. It can be modeled as a single-degree-of-freedom spring-mass-damper system with an equivalent viscous-damping ratio of 0.1 for analyzing its transverse vibration characteristics under wind excitation. Determine the following:
(a) the natural frequency of transverse vibration of the signpost;
(b) the wind velocity at which the signpost undergoes maximum steady-state displacement; and
(c) the maximum wind-induced steady-state displacement of the signpost. Data:
carousle conveyors are used for storage and order picking for small parts.the conveyors rotate clockwise or counter
determine the instantaneous rate of heat transfer from a 1.5-cm-diameter ball bearing with a surface temperature of 150
three cstr are to be used in series. the second reactor has a volume twice that of the first and the third reactors.
level process control labbased on the following graphs you should write a discussion report on1.determination of
Evaluate the coef?cient of thermal expansion, α, for rubber under an extension of 100% at 20?C. A rubber band was stretched from 6 to 12 ins. While being held under a constant stress, it was heated from 20?C to 40?C.
air at 40oc 1 bar and a volumetric flow rate of 60 m3min enters an insulated control volume operating at steady state
automotive exhaust systems often use two catalytic converters. the exhaust temperature is a key factor which determines
water in 50 liter rigid container is initially at 500 kpa and 350c. as the result of heat transfer the water obtains
Discuss some of the problems that might be encountered when implementing OSHA's machine guarding standards in the workplace. Do you feel that the standards are adequate to control machine guarding hazards in general industry?
1. An aluminum bar 125 mm (5.0 in.) long and having a square cross section 16.5 mm (0.65 in.) on an edge is pulled in tension with a load of 66,700 N (15,000 lbf), and experiences an elongation of 0.43 mm (1.7 X 10-2 in.). Assuming that the defo..
The diameter of the tube is 13 cm and its length is 60 m. Determine the overall heat transfer coefficient of this heat exchanger using (a) LMTD and (b) -NTU method.
When temperature increases, the equilibrium concentration of vacancies in a material
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