2D kinematics of a rigid body
Rigid body
A solid body that doesn’t deform.
Degrees of freedom
In the motion of a rigid body in 2D kinematics, there are
- Movement along
direction - Movement along
direction - Rotation about
direction
In 3D, there are
Translation
Movement that changes the position of an object. Translation can be done through a rectilinear or curvilinear path.
Rotation
Circular movement of an object about a fixed axis.
General 2D motion
Instantaneous centre of rotation
The point that has
It can be imagined that the object is momentarily having a pure rotation about
this centre
Centrode
The locus of instantaneous centres during the motion.