2. ME 316 Handout 11 Planar Kinematics of a Rigid Body: Review I 1.Particle vs. Rigid body 2.Planar motion vs. Spatial motion 3.Type of planar motion

3. ME 316 Handout 12 Review : Planar Kinematics of a Rigid Body 1. Particle Versus Rigid Body A B Particle: A & B have the same motion A B Rigid body: A and B may have different motions

4. ME 316 Handout 13 2. Planar motion vs. Spatial motion Example 1

5. ME 316 Handout 14 Example 2

6. ME 316 Handout 15 Spatial motion - Example

7. ME 316 Handout 16 Planar motion – Scientific Definition All particles of a rigid body move along paths which are equidistant from a fixed plane, the body is said to undergo planar motion A body system consists of several rigid bodies. When all rigid bodies undergo planar motion, the system is said to undergo planar motion

8. ME 316 Handout 17 3. Types of planar motion Translation

9. ME 316 Handout 18 3. Types of planar motion Rotation at a fixed axis Planar general motion

10. ME 316 Handout 19 Types of planar motion – Scientific definition Translation: every line segment on the body remains parallel to its original direction during the motion Rotation about a fixed axis: all the particles move along circular paths General plane motion: a combination of translation and rotation.