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A sheet with an initial thickness 30 mm is rolled in two high mills with entering velocity of 5 mm/sec. If the final thickness of sheet is 15 mm find the exit velocity of rolled sheet?

A sheet with an initial thickness 30 mm is rolled in two high mills with entering velocity of 5 mm/sec. If the final thickness of sheet is 15 mm find the exit velocity of rolled sheet? Correct Answer 10mm/sec

By using the consistency of volume, the total volume of the material remains same before and after rolling. So mathematically: -> h1v1=h2v2 -> where h1, h2 is initial and final height, v1 and v2 are entering and exit velocity. -> 30*5=15*v2 -> V2=10 mm/sec.

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