Under the right conditions, it is possible, due to surface tension, to have metal objects float on water. (See Video V1.9.)Consider placing a short length of a small-diameter steel (sp.wt. = 490 lb/ft3) rod on a surface of water. What is the maximum diameter that the rod can have before it will sink? Assume that the surface tension forces act vertically upward. Note: A standard paper clip has a diameter of 0.036 in. Partially unfold a paper clip and see if you can get it to float on water. Do the results of this experiment support your analysis?
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