Engineering
Physics
Elasticity
Question

A rod of length 2m rests on smooth horizontal floor. If the rod is heated from 0°C to 20°C. Find the longitudinal strain developed? (α = 5 × 10–5/°C)

10–3

2 × 10–3

zero

none

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Solution
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In free  expension  there is no strain  or stress developed due to thermal expension.

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