Question

A block of Jell-O is resting on a plate. The Jell-O stands 0.03 m tall and in the shape of a square that is 0.07 m in length. You are bored, waiting for dinner and push tangentially across the top surface with a force of 0.45 N. The top surface moves a distance of ∆x = 5.0 x 10^-7 m relative to the bottom surface. What is the shear modulus of Jell-O?

Answer 1

Explanation:

Solving Equation 10.18 for the shear modulus S, we find that , where A=(0.070 m)(0.070 m) is the area of the top surface, and L0=0.030 m is the thickness of the block:

Jell-O can be deformed easily, so its shear modulus is significantly less than that of a more rigid material like steel

Answer 2

A block of Jell-O is resting on a plate. The Jell-O stands 0.03 m tall and in the shape of a square that is 0.07 m in length. You are bored, waiting for dinner and push tangentially across the top surface with a force of 0.45 N. The top surface moves a distance of ∆x = 5.0 x 10^-7 m relative to the bottom surface. What is the shear modulus of Jell-O?

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