Question

a particle is moving in a vertical circle. The tension in the string when passing through two positions at angles 30 degree and 60 degree from vertical (lowest positions) are T1 and T2 respectively then
a)T1=T2
b)T1>T2
c) T1<T2
d) none
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Answer 1

Answer:T1=T2

T2>T1

T1>T2

Tension in the string always remains the same

Answer :

C

Solution :

Tension,  T=mv2r+mgcosθ

For, θ=30∘,T1=mv2r+mgcosθ30∘

θ=60∘,T2=mv2r+mgcos60∘ ∵ T1>T2

Answer 2

plz refer to the attachment..

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