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Is it necessary to have normal reaction ...

Is it necessary to have normal reaction whenever two surfaces are in contact with each other?

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To answer the question, "Is it necessary to have normal reaction whenever two surfaces are in contact with each other?", we can follow these steps: ### Step-by-Step Solution: 1. **Understanding Normal Reaction**: - The normal reaction is a force exerted by a surface that supports the weight of an object resting on it. It acts perpendicular to the surfaces in contact. 2. **Consider Two Surfaces in Contact**: ...
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