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Laws of Motion question

2019 · Q156
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Laws of Motion question

2019 · Q156

NEETPhysicsLaws of MotionMCQ+4 / −1
A mass m is attached to a thin wire and whirled in a vertical circle. The wire is most likely to break when :
  1. A
    the wire is horizontal
  2. B
    inclined at an angle of 60o from vertical
  3. C
    the mass is at the lowest point
  4. D
    the mass is at the highest point
View written solutionFree

Correct answer: C

Apply Newtons's 2nd law for equation of motion

T - mg cos θ\theta θ = mv2R{{m{v^2}} \over R}Rmv2​

NEET 2019 Physics - Laws of Motion Question 14 English Explanation


T will be maximum when θ\theta θ = 0°,

When mass is at lowest point the chance of breaking is maximum.

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