dry friction

6:12

26:03

53:17

1:59:17

15:15

9:44

10:22

28:41

10:32

4:00

1:10:24

38:11

38:47

3:24

10:02

12:56

24:49

6:17

16:08

7:37

22:06

19:19

9:51

40:55

24:08

13:37

12:09

8:48

53:41

39:20

7:07

1:12:25

56:39

23:56

8:35

3:03

11:12

7:27

9:25

17:04

1:46

13:00

12:19

10:08

10:04

17:51

18:27

5:57

2:21

4:00

10:01

18:57

8:52

20:28

3:47

1:15:37

11:44

4:37

8:27

31:30