When the cutting edge of a knife is put against a fast rotating stone – InterviewSolution

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1.	When the cutting edge of a knife is put against a fast rotating stone to sharpen it, sparks are seen to fly. Explain the reason I will mark you as brainliest !!!!!!!!!!!!!
Answer» Friction between grinding stone and the CUTTING EDGE of the knife PRODUCES heat. As the friction is very large in this CASE, a large amount of heat is produced and we SEE sparks flying....

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