Friction on Different Surface Types

Surface Type
Trial 1 FfF_fFf​ (N)
Trial 2 FfF_fFf​ (N)
Trial 3 FfF_fFf​ (N)
Average FfF_fFf​ (N)
Smooth Wood
2.1
2.3
2.2
2.2
Sandpaper
4.5
4.7
4.6
4.6
Carpet
3.8
3.7
3.9
3.8
Glass
1.5
1.6
1.4
1.5
Rubber Mat
5.2
5.3
5.1
5.2