Kelvi

One end of a string of length l l is connected to a particle of mass m 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, v, the net force on the particle (directed towards center) will be (T (T represents the tension in the string))

easy
System of Particles and Rotational Motion
2017
physics
1. 

T+mv2lT + \frac{mv^2}{l}

2. 

T−mv2lT - \frac{mv^2}{l}

3. 

zero

4. 

T

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