F = 44,500 N
Strain = ?
Length = 19.1 mm, Breath = 15.2 mm
Area = A = 19.1 × 15.2 × 10-6m2
= 2.98 × 10-4 m2
G = 42 × 109 Nm-2
We have, G = \(\frac{F}{A \times strain}\)
∴ Strain = \(\frac {F}{G \times A}\)
\(= \frac{44,500}{2.98 \times 10^{-4} \times 42 \times 10^{9}}\)
= 3.65 × 10-3.