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A box shaped piece of gelatine desert ha...

A box shaped piece of gelatine desert has a top area of 15 `cm^(2)` and a height of 3 cm. when a shearing force of 0.50 N is applied to the upper surface, the upper surface is displaced 4mm relative to the bottom surface. What are the shearing stress, shearing strain and shear modulus for the gelatin ?

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