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A stone of mass \(m\) tied to the end of a string revolves in a vertical circle of radius \(R.\) The magnitude of net forces at the lowest and highest points of the circle directed vertically downwards are:
(\(T_1\) and denote the tension and speed at the lowest point. \(T_2\) and \(v_2\) denote corresponding values at the highest point.)
(\(T_1\) and denote the tension and speed at the lowest point. \(T_2\) and \(v_2\) denote corresponding values at the highest point.)
| Lowest point | Highest point | |
| 1. | \(mg-T_1 \) | \(mg+T_2 \) |
| 2. | \(mg+T_1\) | \(mg+T_2\) |
| 3. | ||
| 4. |
Subtopic: Â Non Uniform Vertical Circular Motion |
 53%
Level 3: 35%-60%
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What is the minimum speed required at the uppermost position to perform a vertical loop if the radius of the chamber is \(25\) m?
1. \(16.7\) m/s
2. \(15.8\) m/s
3. \(35\) m/s
4. \(24\) m/s
Subtopic: Â Non Uniform Vertical Circular Motion |
 76%
Level 2: 60%+
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