Gujarat BoardEnglish MediumSTD 8ScienceFriction3 Marks
Question
Explain with the help of an example that heat is produced by friction.
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Answer
As friction opposes the relative motion between the two surfaces, it produces heat. So, when we rub our hands together vigorously for few minutes, we feel hotness. Similarly when we strike a matchstick against the rough surface, it catches fire. In machineries also, heat is produced due to friction as the machine parts rub against each other.
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