1:23
1:23
1:05
1:06
1:03
2:21
1:16
2:19
1:27
0:58
1:56
5:01
5:01
0:37
0:57
1:02
1:18
![perpetual motion: footnotes [d]](/thumb?url=http%3A%2F%2Finvidious%3A3000%2Fvi%2F5a4ZdM7rRlg%2Fmqdefault.jpg)
0:41
![perpetual motion: footnotes [c]](/thumb?url=http%3A%2F%2Finvidious%3A3000%2Fvi%2FQnSiG_Ut1ds%2Fmqdefault.jpg)
0:52
![perpetual motion: footnotes [a]](/thumb?url=http%3A%2F%2Finvidious%3A3000%2Fvi%2FfmhfdkUQlj0%2Fmqdefault.jpg)
1:31
1:33
1:37
0:49
0:51
1:40
2:00
0:27
1:15
2:31
1:31
1:33
0:49
9:01
2:17
1:04
0:57
1:40
1:43
2:06
1:58
2:03
1:40
0:19
1:17
1:05
1:09
2:06
2:53
4:35
1:16
4:35
1:19
4:39
2:23
1:25
2:45
1:37
3:06
3:49
1:46