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The block of weight W = 100 lb is suspended by two springs each of stiffness k = 200 lb/ft and is acted upon by the force F = 75 cos 15t lb where t is the time in seconds. Determine the amplitude X of the steady-state motion if the viscous damping coeffi- cient c is (a) 0 and (b) 60 lb-sec/ft Compare these amplitudes to the static spring deflection δst.
Fluid flows steadily, at a volume rate Q, through a large pipe and then divides into two small pipes, the larger of which has an inside diameter of 25 mm and carries three times the flow of the smaller pipe.
The end caps are spherical. The cylinder has length of 30 inc., a diameter of 8 in., and a wall thickness of 0.125 in. Determine the stress in the wall at two points A and B. For each, draw the stresses on a 3-D element. Treat the upper cap as spheri..
The key to determining the effectiveness of any customer marketing campaign is the proper use of a control group. A control group is a subset of the customers you're targeting with a particular campaign who you decide will not receive the campaign.
A constant head permeability test was conducted on a clean sand sample. The diameter and length of the test specimen were 10 cm and 12 cm respectively.
Compute the 50 year flood discharge on a large creek in Northern Ohio if the total discharge area is 75 mi^2. The average soil infiltration is 0.5 in./hr; the main channel slope is 0.008.
What is the minimum required length L of the rod so that the cross section at one end can be rotated 90 degree with respect to other end without exceeding the allowable shear stress of 300 MPa
The buses are run by independent drivers, however, who make no attempt to coordinate their schedules. Actually, one bus runs slightly faster than the other so that over many trips the fraction of trips that the second bus leaves within a time t
A pickle producing plant produces and discharges a waste brine solution with a salinity of 13,000 mg/L NaCl at a rate of 0.14 MGD into a stream. Before the discharge enters the stream, the flow rate of the stream is 1.2 MGD and the salinity is 20 ..
How can i define cont support beam in multi span moment that mean Bending moment
The four approach volumes per day at this intersection are 28,648, 23,856, 12,150, and 10,174. The crash totals for the last 3 years are 91, 96, and 87. What is the annual crash rate for this intersection
Calculate average figures for tonnes/round and powder factors in kg/tonne and Determine the drill metres required to achieve a production rate from grade control blasting.
You have been asked by your managing director to put forward to present at a young professionals conference organised by the CIOB. You have to submit the following essay to the organisers for final selection.
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