One end of a string of length \( \ell \) is connected to a particle of mass \( m \) and the othe....

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One end of a string of length \( \ell \) is connected to a particle of mass \( m \) and the other to a small peg on a
\( \mathrm{P} \)
smooth horizontal table. If the particle moves in a circle with speed \( v \) the net force on the particle
W
(directed towards the centre) is:
(1) \( \mathrm{T} \)
(2) \( \mathrm{T}-\frac{m v^{2}}{\ell} \)
(3) \( \mathrm{T}+\frac{m v^{2}}{\ell} \)
(4) 0


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