Question

3 centimetre long copper wire is stretched to increase in length by 0.3 cm find the lateral strain produced in the wire if the poisons ratio for copper 0.26​

Answer 1

Answer:As poision's ratio(o`)=Lateral strain/Longitudinal strain

So,0.26 = Lateral strain × (0.3/3)

Therefore,lateral strain = 0.026

Explanation:

Answer 2

The lateral strain is 0.026.

Explanation:

Given that,

Length of the copper wire, l = 3 cm

Increase in length, $\Delta L=0.3\ cm$

The poisons ratio for copper, $\sigma=0.26$

The ratio of lateral strain to the longitudinal strain is called poisons ratio. So,

$\sigma=\dfrac{S}{(\Delta L/L)}\\\\S=\sigma\times \dfrac{\Delta L}{L}$

S is lateral strain

$S=0.26\times \dfrac{0.3}{3}\\\\S=0.026$

So, the lateral strain is 0.026. Hence, this is the required solution.

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Poisons ratio

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