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One end of a string of length $/$ 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) $T-\frac{m v^2}{l}$
(iii) $T+\frac{m v^2}{l}$ (iv) 0
$T$ is the tension in the string. [Choose the correct alternative].
(i) $T$,
(ii) $T-\frac{m v^2}{l}$
(iii) $T+\frac{m v^2}{l}$ (iv) 0
$T$ is the tension in the string. [Choose the correct alternative].
Solution:
2939 Upvotes
Verified Answer
(i) $T$
The net force $T$ on the particle is directed towards the centre. It provides the centripetal force required by the particle to move along a circle.
The net force $T$ on the particle is directed towards the centre. It provides the centripetal force required by the particle to move along a circle.
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