A boy runs his toy can on dry marble floor, wet marble floor, newspaper and towel spread on the floor. The force of friction acting on the car on different surface in increasing order will be :

Options

A. Wet marble floor, Dry marble floor, Newspaper, Towel
B. News paper, Towel, Dry marble floor, Wetmarble floor
C. Towel, Newspaper, Dry marble floor, Wet marble floor
D. Wet marble floor, Dry marble floor, Towel, Newspaper

Answer

To determine the increasing order of the force of friction acting on a toy car running on different surfaces (dry marble floor, wet marble floor, newspaper, and towel), we need to analyze the frictional characteristics of each surface.

### Step-by-Step Solution:

1. **Identify the Surfaces**: The surfaces on which the toy car is run are:
- Dry marble floor
- Wet marble floor
- Newspaper
- Towel

2. **Understand Friction**: Friction is the force that opposes the motion of an object. The amount of friction depends on the nature of the surfaces in contact. Generally, smoother surfaces have less friction, while rougher surfaces have more friction.

3. **Analyze Each Surface**:
- **Wet Marble Floor**: This surface is smooth due to the presence of water, which reduces friction. Therefore, the force of friction here is the least.
- **Dry Marble Floor**: This surface is smoother than rough surfaces but has more friction than the wet marble floor because it does not have water to reduce the friction.
- **Newspaper**: The surface of the newspaper is relatively rough compared to the marble surfaces, leading to a higher friction force than the dry marble floor.
- **Towel**: The towel is the roughest among the listed surfaces, which means it will have the highest force of friction acting on the toy car.

4. **Rank the Surfaces by Friction**:
- Wet Marble Floor: Least friction
- Dry Marble Floor: More friction than wet marble
- Newspaper: More friction than dry marble
- Towel: Most friction

5. **Write the Increasing Order of Friction**:
- The increasing order of the force of friction acting on the toy car on these surfaces is:
- Wet Marble Floor < Dry Marble Floor < Newspaper < Towel

### Final Answer:
The increasing order of the force of friction acting on the toy car on different surfaces is:
**Wet Marble Floor < Dry Marble Floor < Newspaper < Towel**

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