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Physics - Elasticity Question with Solution | TestHub

PhysicsElasticityMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

In a wire stretched by hanging a weight from its end, the elastic potential energy per unit volume in terms of longitudinal strain $σ$ and modulus of elasticity $Y$ is

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Answer:

Solution:

$E n e r g y d e n s i t y = \frac{1}{2} \times s t r e s s \times s t r a i n,$

$Y = \frac{s t r e s s}{σ}$ or $s t r e s s = Y σ$ ,

$∴ E n e r g y d e n s i t y = \frac{1}{2} Y σ \times σ = \frac{Y σ^{2}}{2}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:ElasticitySubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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