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 N/m². What is the displacement of the upper face in the direction of the applied force?

A) 3.0 mm
B) 3.6 mm
C) 4.2 mm
D) 4.8 mm
E) 5.4 mm