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```
A string breaks if it`s tension exceeds 10 Newtons. A stone of mass 250 gm tied to a string of length 10 cm is rotated in a horizontal circle. The maximum angular velocity of rotation can be-(1) 20 rad/s(2)40 rad/s(3)100 rad/s(4)200 rad/s

```
4 years ago

Vikas TU
14146 Points
```							Since it is rotating in a horizontal frame gravity doen’t works here.Hence balancing the horizontal forces we get,T = m*w^2*l10 = (250/1000)* w^2*(10/100)w^2 = 400w = 20 rad/s.
```
4 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