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View Full Document. Two Forcesâ resultant can be transferred to âOâ along with the moment caused by these forces at âOâ. But this force couple system cannot be replaced by single force at distance âdâ as the force has to be at âOâ as mentioned in problem. This preview has intentionally blurred sections.
Assuming that the forcing function is harmonic in nature, we shall consider two cases of vibration transmission - one in which force is transmitted to the supporting structure, and one in which the motion of the supporting structure is transmitted to the machine. (a) Force excitation.