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When you slide a sofa on a floor, exist...

When you slide a sofa on a floor, ______ exists between the sofa and the floor.

A

Sliding friction

B

rolling friction

C

Static friction

D

Fluid friction

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question "When you slide a sofa on a floor, ______ exists between the sofa and the floor," we need to understand the types of friction that can occur between two surfaces in contact. ### Step-by-Step Solution: 1. **Identify the Action**: The action described in the question is sliding a sofa on the floor. This indicates that there is movement between the two surfaces (the sofa and the floor). 2. **Understand Friction Types**: There are different types of friction: - **Static Friction**: This occurs when two surfaces are in contact but not moving relative to each other. It prevents motion. - **Sliding Friction (Kinetic Friction)**: This occurs when two surfaces slide against each other. It is the friction that acts when the surfaces are in relative motion. - **Rolling Friction**: This occurs when an object rolls over a surface, like wheels on a road. - **Fluid Friction**: This occurs between layers of fluids (like air and water). 3. **Apply the Concept**: Since the sofa is sliding on the floor, the relevant type of friction is sliding friction (also known as kinetic friction). This is because the surfaces are in relative motion. 4. **Conclusion**: Therefore, when you slide a sofa on a floor, the correct term to fill in the blank is "sliding friction." ### Final Answer: When you slide a sofa on a floor, **sliding friction** exists between the sofa and the floor. ---
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