1. King Fahd University of Petroleum & Minerals
Mechanical Engineering
Dynamics ME 201 BY
Dr. Meyassar N. Al-Haddad
Lecture # 29

2. Rigid-Body Motion Types of rigid body planar motion: Translation
Rotational about fixed axis
General plane motion

3. Summary

4. r1 r2
s , v, a

5. Example 16-2
Rest
aA= 2 rad/s2
uP=?
aP=?
qB = 10 revelations of B

6. Problem 16-14 Reverse gear transmission wB= ? G rG = 80 mm
rC= rD = 40 mm
rE = rB = 50mm
rF= 70 mm

7. Problem 16-xx

8. Translation A B
Position
Velocity A B
Acceleration

9. Rotation

10. Relative Motion Analysis: Velocity

11. Indicate the direction of velocities of points A, B, Cx y

12. Example 16-9

13. Rolling wheels C
Rolls without slipping

14. D
Instantaneous center of zero velocity C IC

15. Location of IC knowing the line of action of vA and vB

17. Example 16-11

18. Example 16-12

19. Example

20. Relative-Acceleration equation
aB = acceleration of point B
aA = acceleration of the base point A
a = angular acceleration of the body
w = angular velocity of the body
rB/A = relative-position vector drawn from A to B

21. Rolling wheel with-out slipping
at=0

22. Example 16-17

23. Example 16-18