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The two natural frequencies representing the couple motion, in sliding and rocking motion is ___________

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in Geotechnical Engineering II by (93.8k points)
The two natural frequencies representing the couple motion, in sliding and rocking motion is ___________

(a) ωn1 and ωn2

(b) ωx and ωy

(c) ωϴ and ωn

(d) ωn1 and ωn

This question was addressed to me in homework.

This intriguing question comes from Dynamic Analysis of Block Foundations topic in portion Machine Foundations of Geotechnical Engineering II

1 Answer

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by (243k points)
Right answer is (a) ωn1 and ωn2

The explanation: ωn1 and ωn2 are the two natural frequencies representing the coupled action (i.e., sliding along x-axis and rocking about the y-axis).

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