NEET 2017 Physics Centripetal Force MCQ Question
One end of 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 circle with speed ‘v’, the net force on the particle (directed towards centre) will be (T represents the tension in the string)
T
T + mv²/l
T - mv²/l
Zero
Correct Answer
Detailed Explanation
The centripetal force required for circular motion is provided by the tension in the string minus the centrifugal force (mv²/l).
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