momentum

JEE Mains 2015 Online › General Physics questions › momentum

A heaps of chain is lying on a horizontal table. A small section of the chain is released through a hole in the table. Calculate the velocity as a function of the length of the chain hanging vertically.
A. âˆš(2gx/3)
B. âˆš(4gx/3)
C. âˆš(gx/3)
D. âˆš(gx)

#Physics #General Physics

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Subhomoy Bakshi ·2010-01-17 00:38:15

¹/₂mv²=mgh
or, ¹/₂v²=gh
or, v²=2gh
or, v²=gx [since, h=ht loss of centre of mass]
or, v=âˆš(gx)

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