free vibration and forced vibration difference class 12

5:37

5:00

34:18

9:12

19:25

1:00:16

23:25

7:13

3:52

51:49

کوتاه

1:59

4:34

7:14

1:36

2:55

کوتاه

19:04

1:42

3:09

کوتاه

2:05

5:09

3:31

5:14

32:46

کوتاه

2:31

10:27

7:39

6:07

19:41

1:22

1:16

کوتاه

2:08

12:15

1:17:38

1:09:34

2:29