Out of the given options, sandpaper would have the highest friction.
- Friction depends on two factors - surface roughness and surface area in contact also depends on Normal force. Sandpaper has a very rough, abrasive surface with lots of peaks and valleys. This greatly increases the surface area in contact and mechanical interlocking with any surface it touches. This results in high friction.
The other options:
• Wooden surface: Depends on the smoothness of the wood, can range from low to medium friction.
• Glass surface: Very smooth so it has low friction.
• Paper surface: Relatively smooth so friction would be low to medium depending on the paper type.
- from lowest to highest friction it would be:
Glass < Paper < Wooden < Sandpaper
- Sandpaper has the roughest surface, so it exhibits the highest friction among the given options.