If the sliding friction between two surface in found to be 8 N, then the static friction between these two surface is most likely to be :

Options

A. 5 N
B. 10 N
C. 4 N
D. 2 N

Answer

To determine the static friction between two surfaces when the sliding friction is given as 8 N, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Types of Friction**:
- There are three types of friction: static friction, sliding (kinetic) friction, and rolling friction.
- Static friction is the frictional force that prevents two surfaces from sliding past each other.
- Sliding friction (also known as kinetic friction) is the frictional force acting between two surfaces that are sliding against each other.

2. **Relationship Between Static and Sliding Friction**:
- It is a known fact that static friction is always greater than sliding friction. This is because static friction must overcome the initial resistance to start the motion between the surfaces.
- Therefore, if the sliding friction is 8 N, the static friction must be greater than 8 N.

3. **Evaluate the Options**:
- We need to find the most likely value for static friction based on the information given.
- Since static friction must be greater than 8 N, we can eliminate any options that are less than or equal to 8 N.

4. **Given Options**:
- Option 1: 2 N (less than 8 N, so incorrect)
- Option 2: 10 N (greater than 8 N, so this could be correct)
- Option 3: 4 N (less than 8 N, so incorrect)
- Option 4: 8 N (equal to sliding friction, so incorrect)

5. **Conclusion**:
- The only option that is greater than 8 N is 10 N. Therefore, the static friction between the two surfaces is most likely to be 10 N.

### Final Answer:
The static friction between the two surfaces is most likely to be **10 N**.

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