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A small rotating machine weighing 50 lb runs at a constant speed of 6000 rpm. The machine was installed in a building, and it was discovered that the system was operating at resonance.
Design a retrofit undamped absorber such that the nearest resonance is at least 20% away from the driving frequency.
A thin spherica lshel'I has a radius of 1.90 m. An applied torque of 960 N.m gives the shell an angular acceleration of 6.20 rad/s2 about an axis through the center of the shell. What is rotational inertia of the shell about that axis?
Determine the maximum speed at which the vehicle can travel round a curve of radius 90 m and the angle to which the curve would have to be banked for the vehicle to travel round it at a speed of 60 km h 1 without any tendency to side-slip?
water at the rate of 0.8 kgs at 93 degc is forced through a 5 cm id copper tube at a suitable velocity. the wall
A spine attached to a wall maintained at a uniform temperature Tb has the shape of a circular cone with base diameter b, height L and a concave parabolic profile, and it is exposed to a fluid at a uniform temperature T?.
a four-cylinder two-stroke 2.0-l diesel engine that operates on an ideal diesel cycle has a compression ratio of 22 and
For T 5 808F, determine the steam quality at the turbine exit, the steam mass flow rate, in lb/h, and the thermal efficiency. Plot the quantities of part (a) versus T ranging from 80 to 1058F.
(a) determine the net power developed per unit mass flowing, in kJ/kg, and the thermal efficiency for a compressor pressure ratio of 8. (b) plot the net power developed per unit mass flowing, in kJ/kg, and the thermal efficiency, each versus compr..
Using the hydrostatic law dp/dz = -(rho)g and the ideal gas law p = (rho)RT, show that if the temperature of the atmosphere varies with height as T(z) = T_o - Bz, then the atmospheric pressure varies with height as p(z) = p_o(1-(Bz/T_o))^(g/(BR))
Class 20 and class 60 gray cast irons have tensile strengths of about 20 and 60 ksi respectively. Assuming that the fractures start from graphite ?akes and that the ?akes act as preexisting cracks, use the concepts of Grif?th analysis to predict t..
Name products that are manufactured using these processes and write two sentences on why you know it's made from this process.
12 lbm of carbon c reacts with 24 lbm of oxygen o2 to form 22 lbm of carbon dioxide co2 plus an unknown amount of
A mass of 0.5 g of air is contained in a piston-cylinder device. Initially the system is at 100 kPa and 25°C. The system is now compressed adiabatically to a volume 17 times smaller and a temperature of 700 K.
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