Suppose a link AB goes through a motion and takes a new position as A’B’ after a specific period of time. Considering the motion of the link, it takes combined motion of rotation and translation which is shown in Fig. 4.1

If the total motion of the link AB is broken into two. First it goes for translation motion to reach A’B* and second it goes for rotation to reach A’B’ as shown in Fig. 4.2 (a)

Suppose the total motion of the link AB is again broken into two. But here first it goes for rotation to reach AB* and second it goes for translation to reach A’B’ as shown in Fig. 4.2 (b)

**Links of Previous Main Topic:-**

- Introduction to statics
- Introduction to vector algebra
- Two dimensional force systems
- Introduction concept of equilibrium of rigid body
- Friction introduction
- Introduction about distributed forces
- Area moments of inertia in rectangular and polar coordinates
- Mass moment of inertia introduction
- Work done by force
- Kinematics of particles
- Position vector velocity and acceleration
- Plane kinematics of rigid bodies introduction

**Links of Next Mechanical Engineering Topics:-**