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A uniform cylindrical block of length l ...

A uniform cylindrical block of length `l` density `d_(1)` and area of cross section A floats in a liquid of density `d_(2)` contained in a vessel `(d_(2) gt d_(1))`. The bottom of the cylinder just rests on a spring of contant k. The other end of the spring is fixed to the bottom of the vessel. A weight that may be placed on top of the cylinder such that the cylinder is just submerged in the liquid. find the weight.

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The correct Answer is:
`[ l(d_(2)-d_(1))(k/d_(2)+Ag)]`
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