What does a DOF (degree of freedom) mean ?
Let me take the door as an example, It can rotate around the side it's hinged to . yes ?
Then this is a degree of freedom, Ok ?
A body in space. How many DOFs it has ?
to answer it, Imagine the Cartesian co-ordinate system X-Y-Z
I can go along X +ve or X -ve - > 1 DOF
I can go along Y +ve or Y -ve - > 1 DOF
I can go along Z +ve or Z -ve - > 1 DOF
I can rotate about X - > 1 DOF
I can rotate about Y - > 1 DOF
I can rotate about Z - > 1 DOF
- I hope you got it, Good luck