A ball rolls off the top of a stairway with horizontal velocity u. The steps are 
high and 
wide. The minimum velocity u with which that ball just hits the step 5 of the stairway will be 
where 
_______ [use 
].
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(2)
The ball needs to just cross 4 steps to just hit 
step
Therefore, horizontal range 
Similarly, in vertical direction
Therefore, 
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