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While designing a shock absorbing bumper for a 5-Mg rail car, the spring used for the bumper follows a nonlinear relationship of F = ks2 where F is the force in Newtons and s is the compression distance in meters. Select the proper value of k so that the max deflection of the spring is 0.2 m when the rail car has a contact velocity of 5 m/s. Ignore the mass of the wheels.
A spherical tank is being designed to hold 7 moles of methane gas at a pressure of 8 bar and a temperature of 50oF. Determine the volume of the spherical tank to be used.
The homogeneous gate shown in Fig. P2.88 consists of one quarter of a circular cylinder and is used to maintain a water depth of 4 m. That is, when the water depth exceeds 4 m, the gate opens slightly and lets the water flow under it. Determine the w..
Determine the self weight, moment of inertia, and cross-sectional areas for the following hot rolled standard section:
A 1 meter diameter cylindrical mass, M, is connected to a 2 meter wide rectangular gate. The gate is to open when the water level, h, drops below 2.5 meters. Determine the required value for M. Neglect friction at the gate hinge and pulley.
A 1.50 L buffer solution is 0.250 M in HF and 0.250 M in NaF. Calculate the pH of the solution after the addition of 0.0500 moles of solid NaOH. Assume no volume change upon the addition of base. The Ka for HF is 3.5 x 10 -4 .
The cycle has a thermal efficiency of 35%, and steam changes from saturated vapor at 300 C during the heat addition process. If the mass flow rate of the steam is 2kg/s, determine the net power (kw) output of this engine.
Find the derivative of the equations f(x)=cos(x) using the finite differencing methods and compare the error with the actual answer as a function of x in matlab
Because of the insulation between them, the sun heats up the wall panel 120 degrees F but the column to 80 degrees F. Determine the consequent compressive stress in the curtain wall.
Evaporation rate in a 3650 acre-lake is 100 acre-ft/d. If inflow to the lake is 25.2 cfs, determine the change in storage (ft) during 365 days.
The three hinged arch is composed of segments of a circle. Support points A and D are not at the same level. Determine (a) the horizontal and vertical components of reaction at A and D. (b) the shear, thrust, and moment in the arch at point C.
The motor in the unit runs at 300 rpm and produces an unbalanced force of 60 lb at this speed. Neglect weight of the beams and assume 1% viscous deflection in the system; for steel E=30,000 ksi.
a mild steel component in a form of a finite slab with a thickness of 2L=2.5 mm is to be hardened by packing it in a carbonaceous material in a furnace for a predetermined time. the uniform initial carbon concentration of the slab is 0.15 percent ..
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