Kinematics Question 560

Question: A particle is moving in a vertical circle.The tensions in the string when passing through two positions at angles30o and 60o from vertical (lowest position) are T1 and T2 respectively.then[Or it’ssa JEE 2002]

Options:

A)T1=T2

B) T2>T1

C) T1>T2

D) Tension in the string always remains the same

Show Answer

Answer:

Correct Answer: C

Solution:

Tension, T=mv2r+mgcosθ

For, θ=30,T1=mv2r+mgcos30

θ=60,T2=mv2r+mgcos60T1>T2



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