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The end `A` of a uniform rod AB of length `l` touches a horizontal smooth fixed surface. Initially makes an angle of 30° with the vertical. Find the magnitude of displacement of the end B just before it touches the ground after the rod is released.
The end `A` of a uniform rod AB of length `l` touches a horizontal smooth fixed surface. Initially makes an angle of 30° with the vertical. Find the magnitude of displacement of the end B just before it touches the ground after the rod is released.

```
3 years ago

Shirish Shrivastav
11 Points
```							When rod is released it falls due to gravity so no external force acts along horizontal direction so center of mass will not displace along horizontal. Initial horizontal distance of B from C. O. M is l/2sin30Final horizontal distance of B from C is l/2.There fore horizontal displacement of B is l/2 - l/4= l/4Vertical displacement of B is l cos 30Write displacement of B in vector form, -l/4 i - root 3/2 l j and find its magnitude. Answer is root 13 l/4
```
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