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A ball rolls off the top of a staircase ...

A ball rolls off the top of a staircase with a horizontal velocity `u m//s`. If the steps are h meter high and b meter wide, the ball will hit the edge of the nth steps, if:

A

`n=(2hu)/(gb^(2))`

B

`n=(2hu^(2))/(gb)`

C

`n=(2hu^(2))/(gb^(2))`

D

`n=(hu^(2))/(gb^(2))`

Text Solution

Verified by Experts

The correct Answer is:
3
`R==u sqrt((2H)/(g))impliesnb=u sqrt((2nh)/(g))`
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