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It has been found that a printing press, of mass 300 kg and operating speed 3000 rpm, produces a repeating force of 30,000 N when attached to a rigid foundation. Find a suitable viscously damped isolator to satisfy the following requirements:
(a) the static deflection should be as small as possible;
(b) the steady-state amplitude should be less than 2.5 mm;
(c) the amplitude during start-up conditions should not exceed 20 mm; and (d) the force transmitted to the foundation should be less than 10,000 N.
The inlet and outlet air temperature of a centrifugal flow compressor are 70oF and 120oF respectively (See Figure 1). The air flow steadily at a mass flow rate of 24 lbm/min. If the compressor is adiabatic, determine the rate of work at which the air..
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Calculate the position of poid D when Piston 1 is retracted 8 in from fully extented position. Calculate the force developed by the actuator when Piston 1 is retracted 8 in from fully extented position.
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