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A 120-lb woman stands in the center of an end-supported board and causes a mid-span defl...

A 120-lb woman stands in the center of an end-supported board and causes a mid-span deflection of 0.9 in. If she flexes her kness-slightly in order to cause a vertical vibration, what is the frequency fn of the motion? Assume elastic response of the board and neglect its relatively small mass.

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Solutions For Problems in Chapter 8
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