angle of friction

6:53

3:55

9:16

43:42

24:49

7:37

5:35

5:42

5:08

4:18

12:51

59:26

2:47:19

5:40

7:01

7:19

21:02

30:59

8:14

19:22

8:36

57:24

25:50

8:09

7:35

7:00

1:39:35

6:18

1:04:54

5:14

56:45

3:50

12:42

4:32

17:58

37:57

10:27

8:06

8:33

23:47

3:49

14:09

10:32

14:56

1:32:02

6:38

5:09

00:50

4:27

6:44

19:47

5:57

4:33

7:53

10:02

6:27

13:37

10:52

5:12

15:39