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A steel wire 2 m long is suspended from ...

A steel wire `2 m` long is suspended from the ceiling. When a mass is hung from its lower end, the increase in length recorded is `1 cm`. Determine the strain in the wire.

A

0.002

B

0.005

C

0.008

D

0.02

Text Solution

Verified by Experts

The correct Answer is:
B
Original length `=2m`
Increase in length `=1cm=1xx10^(-2)m`
Longitudinal strain`= ("Increase in length")/("Original length")`
`=(1xx10^(-2)m)/(2m)=5xx10^(-3)`
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