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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:
What is the stream function that represents the potential now about a cylinder whose radius is 1 m and which is located in an air stream where the free-stream velocity is 50 m/s? What is the change in pressure from the free-stream value to the value ..
INSTRUCTIONS: Use Sheet Metal and Weldments to create the assembly file shown in FIGURE
Due to drought, the water level of a 10-acre pond is five feet below normal. If you wanted to fill the pond to normal capacity by using a hose connected to your kitchen faucet, how long would it take to fill the pond? Select an appropriate unit of ti..
design a fire resistant safety sphere with diameter of 0.5m that will protect its combustible contents from fire which
Ammonia as a saturated vapor at 130 psi expands is thermally in an internally reversible process to a pressure of 18 psi. Determine the heat transfer and work for this process.
Plot a graph showing the trend of the insulation thickness vs. the reduction percent - Determine the adequate thickness.
an isolated chamber with rigid walls is divided into two equal compartments one containing steam at 10 bar and 370oc
in anthracene scintillation photons have a wavelength of 447 nm. if i mev of energy is deposited in an anthracene
the potential for air pollution by particulate matter pm2.5 andor pm10 is best assessed by constructing the terminal
Two samples of different pure substances having equal mass are each placed in rigid containers. The first container is half as large as the second container. After the containers are sealed, the pressure of the first container is observed to be twice..
A 200mm DN pipeline has to deliver 80ml/h of water at a discharge pressure of 5,550kPa. Approximately how many pump stations would be needed for a pipeline 300km long?
A beam with a rectangular cross section has dimensions of b =40 mm and t= 20 mm. The beam is made of 7475-T7351 aluminium and is subjected to a bending moment of M = 900 N*m
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