4.An engine connecting rod is 25 cm between the centre-lines of the big and small ends. The bigend bearing is 5 cm diameter and the small end is 2.5 cm diameter. When the connecting rod issuspended on a horizontal knife edge about its big end and vibrated as a compound pendulum,the measured frequency of vibration is 1.145 Hz. When the experiment is repeated with the rodsuspended from the small end, the measured frequency of vibration is 1.082 Hz. Determine theposition of the centre of mass G and the radius of gyration KG about G. 2.A disc 30 cm diameter and 4 cm thick and density 0.0078 kg/cm³ oscillates at a frequencyon one end of a shaft which is built-in at the other end. When an unknowndisc is addedof inertia of the unknownfirst disc, the frequency is reduced to 3.4Hz. Findthe momentof 5 Hzto thedisc.

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Answered: cing r pendu ith th

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cing r pendu ith th

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Concept explainers

Fluid Kinematics

The branch of science that deals with objects which are either in motion or stationary are studied under the branch of classical mechanics. Fluid mechanics is a subcategory of classical mechanics that deals with the behavior of fluids at rest (fluid statics) or in motion (posing some velocity). In fluid kinematics, studies focus on the associated motion of fluid particles or groups of particles, and its associated parameters like displacements, velocity, and acceleration without concerning about the forces that caused the motion. All the laws of classical mechanics are applied in the study of fluid kinematics.

Question

4.
An engine connecting rod is 25 cm between the centre-lines of the big and small ends. The big
end bearing is 5 cm diameter and the small end is 2.5 cm diameter. When the connecting rod is
suspended on a horizontal knife edge about its big end and vibrated as a compound pendulum,
the measured frequency of vibration is 1.145 Hz. When the experiment is repeated with the rod
suspended from the small end, the measured frequency of vibration is 1.082 Hz. Determine the
position of the centre of mass G and the radius of gyration KG about G.

2.
A disc 30 cm diameter and 4 cm thick and density 0.0078 kg/cm³ oscillates at a frequency
on one end of a shaft which is built-in at the other end. When an unknown
disc is added
of inertia of the unknown
first disc, the frequency is reduced to 3.4
Hz. Find
the moment
of 5 Hz
to the
disc.

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