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Physics - Elasticity Question with Solution | TestHub

PhysicsElasticityMiscellaneousEasy2 minPYQ_2021

PhysicsEasysingle choice

The length of a metal wire is $ℓ_{1},$ when the tension in it is $T_{1}$ and is $ℓ_{2}$ when the tension is $T_{2} .$ The natural length of the wire is:

Options:

Answer:

B

Solution:

$T_{1} = k (ℓ_{1} - ℓ_{0})$

$T_{2} = k (ℓ_{2} - ℓ_{0})$

$\frac{T_{1}}{T_{2}} = \frac{ℓ_{1} - ℓ_{0}}{ℓ_{2} - ℓ_{0}}$

$T_{1} ℓ_{2} - T_{1} ℓ_{0} = T_{2} ℓ_{1} - T_{2} ℓ_{0}$

$\frac{T_{2} ℓ_{1} - T_{1} ℓ_{2}}{T_{2} - T_{2}} = ℓ_{0}$

Stream:JEESubject:PhysicsTopic:ElasticitySubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2021

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