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The ball rolls off the stairway with a horizontal velocity of magnitude 5m/s . The steps are 8cm high and 8cm wide which step will the ball hit first
The ball rolls off the stairway with a horizontal velocity of magnitude 5m/s . The steps are 8cm high and 8cm wide which step will the ball hit first

```
3 years ago

Arun
25768 Points
```							Horizontal distance covered by ball =nbVertical distance covered by ball =nhIf the time taken to hit the edge of nth step is t, thennb = utnh = 1/2 gt^2Eliminating t, we getn = 2h* u^2/ g*b^2Now in the question we have to find the value of n when,h = 8, u= 5, b =8Son = 2*8*25*100/64*10 = 4000/64 = 62.5Hence it will hit 62th steps
```
3 years ago
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### Course Features

• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions