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?

Answer 1

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.