Which of the following is not an advantage of friction ?

Options

A. it enables drawing to be made on paper
B. it enables fallen things to be picked up
C. it enables rubber pads to be rubbed off.
D. it enables vehicles to move on ground

Answer

To solve the question "Which of the following is not an advantage of friction?", we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understanding Friction**:
- Friction is the resistance that one surface or object encounters when moving over another. It has several advantages in our daily life.

2. **Analyzing Option 1**:
- **Statement**: "It enables drawing to be made on paper."
- **Analysis**: When you draw on paper, the friction between the pen and the paper allows the ink or graphite to adhere to the surface. This is indeed an advantage of friction.

3. **Analyzing Option 2**:
- **Statement**: "It enables fallen things to be picked up."
- **Analysis**: Friction allows us to grip objects, making it easier to pick them up. This is also an advantage of friction.

4. **Analyzing Option 3**:
- **Statement**: "It enables rubber pads to be rubbed off."
- **Analysis**: Rubbing off rubber pads typically involves wear and tear, which is a disadvantage of friction. In this case, friction does not provide a beneficial effect; instead, it leads to the degradation of the material.

5. **Analyzing Option 4**:
- **Statement**: "It enables vehicles to move on the ground."
- **Analysis**: Friction between the tires of a vehicle and the road surface is crucial for movement and control. This is definitely an advantage of friction.

6. **Conclusion**:
- After analyzing all options, we find that options 1, 2, and 4 are advantages of friction, while option 3 is not. Therefore, the correct answer is **Option 3: It enables rubber pads to be rubbed off**.

### Final Answer:
**Option 3: It enables rubber pads to be rubbed off is not an advantage of friction.**

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