Hello friends, this is a classroom type lecture. Here you can get the class note.
Generalised Coordinate
https://youtu.be/Oyl-ixe-nZ4
Generalised Displacement
https://youtu.be/L3-uUtfpoWw
Generalised velocity
https://youtu.be/ULMlJgrJTTk
Generalised Acceleration
https://youtu.be/DW8g8xQhLbA