One end of a string of length l is connected to a particle of mass m and the other to a small peg on a smooth horizontal table.
One end of a string of length l is connected to a particle of mass m and the other 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) is:
(i) T, (ii) T-(mv2)/l (iii) T+(mv2)/l (iv) 0
T is the tension in the string. [Choose the correct alternative].
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