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Question
Knives are grounded to a thin edge to:
Knives are grounded to a thin edge to:
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Solution
The correct option is D Both b and c
Pressure is given by force/area. The blunt knife has a larger surface area and it becomes difficult to cut. On sharpening the knife the surface area of the edge of the knife decreases as a result the force acts on comparatively smaller surface area and generates huge pressure.
Pressure is given by force/area. The blunt knife has a larger surface area and it becomes difficult to cut. On sharpening the knife the surface area of the edge of the knife decreases as a result the force acts on comparatively smaller surface area and generates huge pressure.
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