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Question
Answer the following.
What is the strain in a wire cable of the original length 50 m whose length increases by 2.5 cm when a load is lifted?
Solution
Given: L = 50 m, Δl = 2.5 cm = 2.5 × 10-2 m
To find: Strain
Formula: Strain = `(Delta l)/"L"`
Calculation: From the formula,
Strain = `(2.5 xx 10^-2)/50 = 5 xx 10^-4`
The strain produced in wire is 5 × 10-4.
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