A platform of weight 200lb, supported by two springs each of constant k = 250 lb/in., is
Question:
A platform of weight 200lb, supported by two springs each of constant k = 250 lb/in., is subjected to a periodic force of maximum magnitude equal to 125lb. Knowing that the coefficient of damping is 9lb ??s/in., determine
(a) The natural frequency in rpm of the platform if there were no damping,
(b) The frequency in rpm of the periodic force corresponding to the maximum value of the magnification factor, assuming damping,
(c) The amplitude of the actual motion of the platform for each of the frequencies found in parts a and b.
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a No Damping k 2250 lbin 500 lbin 6000 lbft k 6000 lbft m 2000 lb322 fts n ...View the full answer
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Related Book For 
Vector Mechanics for Engineers Statics and Dynamics
ISBN: 978-0073212227
8th Edition
Authors: Ferdinand Beer, E. Russell Johnston, Jr., Elliot Eisenberg, William Clausen, David Mazurek, Phillip Cornwell
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