The resistance of a packing material to a sharp object penetrating it is a force proportional to the fourth power of the penetration depth x; that is, F = kx^4.
Calculate the work done to force a sharp object a distance d into the material.
The resistance of a packing material to a sharp object penetrating it is a force proportional to the fourth power of the penetration depth x; that is, F = kx^4.
Calculate the work done to force a sharp object a distance d into the material.
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