Question

2. [5] Jello is a floppy' material that can undergo large, easily visible shear strains. A cube of jello of side length 4.0 cm rests on, and is adhered to, a horizontal surface. You apply a horizontal force distributed uniformly over its top face of magnitude 0.20 N, and measure that the formerly vertical sides now make a 7.1° angle with the vertical. (Assume the deformation is elastic.) a) [2] What is the shear stress you have applied and the horizontal displacement of the top side? b) [3] What is the measured shear modulus of jello?

Answer 1

To solve the problem, the basic concepts of elasticity are used. Definitions of various elastic quantities like shear stress, shear modulus and shear strain are used to figure out the numerical problems..