Shear Stress and Strain: the Base of an Aluminum Block

Multiple Choice

Shear stress and strain: The base of an aluminum block, which is fixed in place, measures 90 cm by 90 cm, and the height of the block is 60 cm. A force, applied to the upper face and parallel to it, produces a shear strain of 0.0060. The shear modulus of aluminum is 3.0 × 10¹⁰ Pa. What is the sheer stress on the block?

A) 180 × 10⁶ N/m²
B) 360 × 10⁶ N/m²
C) 600 × 10⁶ N/m²
D) 720 × 10⁶ N/m²
E) 900 × 10⁶ N/m²