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Physics - Elasticity Question with Solution | TestHub

PhysicsElasticityMiscellaneousMedium2 minQB

PhysicsMediumsingle choice

Passage / Comprehension

The graph shows the force-extension curve of a steel wire under tensile force. PQ and QR are two idealised straight-line sections. The unextended wire length is $2.00 m$ . Q is the proportionality limit and R is the yield point.

Work done in stretching the wire from Q to R is:

Options:

Answer:

Solution:

$W = \frac{1}{2} (F_{Q} + F_{R}) (x_{R} - x_{Q})$ .

$W = \frac{1}{2} (1000 + 1500) (44 - 9) 1 0^{- 3} = 43.75 J$ .

Stream:JEESubject:PhysicsTopic:ElasticitySubtopic:Miscellaneous

⏱ 2mℹ️ Source: QB

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