The rolling friction is considerably ______ than sliding friction

Options

A. lesser
B. higher
C. neutral
D. no effect

Answer

To answer the question, "The rolling friction is considerably ______ than sliding friction," we need to analyze the characteristics of rolling friction compared to sliding friction.

### Step-by-Step Solution:

1. **Understanding Friction Types**:
- Friction is the resistance that one surface or object encounters when moving over another. There are two main types of friction we are considering: rolling friction and sliding friction.

2. **Defining Rolling Friction**:
- Rolling friction occurs when an object rolls over a surface, such as a wheel or a ball. This type of friction is generally lower because the area of contact between the rolling object and the surface is minimal.

3. **Defining Sliding Friction**:
- Sliding friction occurs when an object slides over a surface, such as a box being pushed across the floor. In this case, the area of contact is larger compared to rolling friction.

4. **Comparing Areas of Contact**:
- In rolling friction, the contact area is very small (only a point of contact), which reduces the frictional force. In contrast, sliding friction has a larger area of contact, leading to greater resistance.

5. **Conclusion**:
- Since rolling friction has a smaller area of contact compared to sliding friction, it results in less resistance. Therefore, we can conclude that "The rolling friction is considerably **less** than sliding friction."

### Final Answer:
The rolling friction is considerably **less** than sliding friction.

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