(73) A uniform slender bar of mass 3 kg is hinged at O and has a horizontal position under the action of masses maA=1 kg, mg=4 kg, the spring whose stiffness is 320 N/cm and the dashpot whose damping coefficient is 20.8 N.sec/cm as shown in the Fig. below. The bar is excited by giving the mass A a harmonic motion YA = 3.5 sin 50t where YA in cm and t in seconds. Determine:- (a) the damped natural frequency, (b) the amplitude of motion and its phase angle and (c) the ratio between the first and third cycles of motion. mB MA 0.25L 0.5L 0.25L

(73) A uniform slender bar of mass 3 kg is hinged at O and has a horizontal position under the action of masses maA=1 kg, mg=4 kg, the spring whose stiffness is 320 N/cm and the dashpot whose damping coefficient is 20.8 N.sec/cm as shown in the Fig. below. The bar is excited by giving the mass A a harmonic motion YA = 3.5 sin 50t where YA in cm and t in seconds. Determine:- (a) the damped natural frequency, (b) the amplitude of motion and its phase angle and (c) the ratio between the first and third cycles of motion. mB MA 0.25L 0.5L 0.25L

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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