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Physics - Elasticity Question with Solution | TestHub

PhysicsElasticityMiscellaneousMedium2 minQB

PhysicsMediummultiple choice

A ring of mass $m$ , radius $R$ , area $a$ and modulus $Y$ rests on a smooth cone of radius $2 R$ and semi-vertical angle $4 5^{\circ}$ . Assume small extension.

Options:(select one or more)

Answer:

A, B, C

Solution:

Element equilibrium gives $T = \frac{m g}{2 π}$ .

$Δ L = \frac{T ( 2 π R )}{aY} = \frac{m g R}{aY}$ .

$U = \frac{1}{2} T Δ L = \frac{m ^{2} g ^{2} R}{4 πaY}$ .

Thus D is false.

Stream:JEESubject:PhysicsTopic:ElasticitySubtopic:Miscellaneous

⏱ 2mℹ️ Source: QB

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