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`        A sphere of mass m and radius r , Rolls and encounters an obstacle of height r/2 . What is the angular velocity of the sphere ?`
one year ago

Vikas TU
10078 Points
```							Dear student During collision, large impulsive forces are generated at contact point A, neglecting weight of sphere.By the conservation of angular momentum about A.mv(r-h) + 2/5 mr^2(v/r) = mv'r + 2/5 (v'/r) 3/4 mvr + 2/5 mvr = 7/5 mv'r v' = 23/28 v w' = v'/r = 23/28r
```
16 days ago
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### Course Features

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