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प्रश्न
Sometimes, a crackling sound is heard while taking off a sweater during winters. Explain.
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उत्तर
When we take off our sweaters in winter, we hear a crackling sound. This is because removing our sweater acquires charge due to friction between the sweater and our body. As a result, we hear a crackling sound from the sweater.
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संबंधित प्रश्न
Friction opposes the ______ between the surfaces in contact with each other.
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The sliding friction is more than the rolling friction.
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Friction is reduced by
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.................... is the SI unit of force.
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| Column I | Column II | |
| a) | Static friction | Viscosity |
| b) | Kinetic friction | Least friction |
| c) | Rolling friction | Objects are in motion |
| d) | Friction between the liquid layers | Objects are sliding |
| e) | Sliding friction | Objects are at rest |
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