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Mechanics

Cool goIITian

 Joined: 30 Mar 2010 Post: 34
2 Apr 2012 09:34:20 IST
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A tennis ball rolls off the top of a stair case way with a horizontal velocity u m/s. If the steps are b metre wide and h metre high, the ball will hit the edge of the nth step if n = ?(find the value of n in terms of u, h, b, and g)

Blazing goIITian

Joined: 2 Mar 2012
Posts: 308
2 Apr 2012 10:13:13 IST
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## n = (u/b)*root(2h/g)*[ 2*(1+root2+root3+root4+......+root(n-1))  + root n ]

New kid on the Block

Joined: 29 Jun 2011
Posts: 3
5 Apr 2012 22:40:11 IST
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even i got this

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