Find the angular velocity ?f at which resonance will occur

Reference no: EM131390629

A 60-lb disk is attached with an eccentricity e = 0.006 in. to the midpoint of a vertical shaft AB which revolves at a constant angular velocity ωf . Knowing that the spring constant k for horizontal movement of the disk is 40,000 lb/ft, determine

(a) the angular velocity ω_f at which resonance will occur,

(b) the deflection r of the shaft when ω_f = 1200 rpm.

Reference no: EM131390629

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