Question

mona is cutting vegetabled in the absence of her mother. she finds it difficult to cit vegetable. she dharpens the cutting edge of knife and cut the vegetables easily.......1. what value do u learn from mona's action?.....2. how does sharpening the blunt tool help in cutting the vegetables easily

Answer 1

Mona sharpens the knife so that Contact of Surface area decreases and  the Resultant pressure will be more and the vegetables will be easily cut down.Thus the pressure is inversely proportional to area of contact and directly proportional to the Force applied.

Answer 2

Answer:1. We learn from Mona to cut the vegetables easily we can sharpen the edge of knife.

2. sharpening the blunt tool help in cutting the vegetables easily because a blunt knife does not cut an object easily because due to its thicker edge, the force of our hand falls over a larger area of the object and produce less pressure. This lesser pressure cuts the object with difficulty. That is why blunt knife cannot help to cut the vegetables easily.

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