The instrument is centered uniformly on a platform P, which in turn is supported by four springs,
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The instrument is centered uniformly on a platform P, which in turn is supported by four springs, each spring having stiffness k. If the floor is subjected to a vibration f, having a vertical displacement amplitude δ0, determine the vertical displacement amplitude of the platform and instrument. The instrument and the platform have a total weight W.
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Given: k = 130 f = 7 Hz ft 50 80 = 0.17 ft W = 18 lb
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