of the 6 kn force on the beam

1:55

19:17

4:18

14:28

1:33

کوتاه

1:06

2:45

کوتاه

9:24

3:58

کوتاه

1:09

10:08

1:22

2:52

6:51

کوتاه

15:12

10:14

15:09

7:36

10:12

23:33

23:23

23:23

4:07

23:33

23:33

23:33

4:30

12:21

52:57

52:07

6:54

1:01

2:29

2:06

19:35

7:14