A steel plate of face area
Question:

A steel plate of face area $4 \mathrm{~cm}^{2}$ and thickness $0.5 \mathrm{~cm}$ is fixed rigidly at the lower surface. A tangential force of $10 \mathrm{~N}$ is applied on the upper surface. Find the lateral displacement of the upper surface with respect to the lower surface. Rigidity modulus of steel $=8.4 \times 10^{10} \mathrm{~N} / \mathrm{m}^{2}$.

Solution: