One end of the string of length l is connected to a particle of mass m and the other end is connected to a small peg on a smooth horizontal table. If the particle moves in a circle with speed v, the net force on the particle (directed towards the centre) will be: (T represents the tension in the string)
1. | \(T \) | 2. | \(T+\frac{m v^2}{l} \) |
3. | \(\mathrm{T}-\frac{m v^2}{l} \) | 4. | \(\text{Zero}\) |