Four children were asked to arrange forces due to rolling, static and sliding friction in a dreasing order. The correct arrangement is :

Options

A. Rolling, Static, Sliding
B. Rolling, Sliding, Static
C. Static, Sliding, Rolling
D. Sliding, Static, Rolling

Answer

To arrange the forces due to rolling, static, and sliding friction in decreasing order, we need to understand the characteristics of each type of friction.

### Step-by-Step Solution:

1. **Understand the Types of Friction**:
- **Static Friction**: This is the frictional force that prevents an object from starting to move. It is usually the strongest type of friction.
- **Sliding Friction**: This is the frictional force that acts on an object that is sliding over a surface. It is weaker than static friction but stronger than rolling friction.
- **Rolling Friction**: This is the frictional force that occurs when an object rolls over a surface. It is the weakest type of friction.

2. **Compare the Forces**:
- Since static friction is the force that must be overcome to start moving an object, it is greater than sliding friction.
- Sliding friction is the force that acts on an object already in motion, and it is greater than rolling friction, which occurs when an object rolls.

3. **Arrange in Decreasing Order**:
- Based on the comparison, we can arrange the types of friction in decreasing order of their strength:
- **Static Friction** (strongest)
- **Sliding Friction** (medium)
- **Rolling Friction** (weakest)

4. **Final Arrangement**:
- Therefore, the correct arrangement of forces due to rolling, static, and sliding friction in decreasing order is:
- **Static Friction > Sliding Friction > Rolling Friction**

### Conclusion:
The correct answer is:
- **Static Friction > Sliding Friction > Rolling Friction**