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The interlocking of the depressions and ...

The interlocking of the depressions and elevations (irregularities) present on the surfaces of the bodies in contact cause friction.

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### Step-by-Step Solution: 1. **Understanding the Statement**: The statement claims that the interlocking of depressions and elevations (irregularities) present on the surfaces of bodies in contact causes friction. 2. **Analyzing Surfaces**: Consider two surfaces that are in contact with each other. For example, let’s denote them as Surface 1 and Surface 2. 3. **Microscopic Structure**: At a microscopic level, both surfaces have irregularities. These irregularities include dips (depressions) and raised areas (elevations). ...
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