1. King Fahd University of Petroleum & Minerals
Mechanical Engineering
Dynamics ME 201 BY
Dr. Meyassar N. Al-Haddad
Lecture # 30

2. General Application of the Equations of Motion
Summation of moment in FBD = summation of the kinetic moment in K.D

3. Rectilinear Translation

4. Curvilinear Translation

5. slipping Vs. Tipping If x > 1.5 ft tipping
If x < 1.5 ft slipping x N

6. Slipping Vs. Freely rotatingmg
FA=msNA NA NB

7. “Wheely” Vs. Non-Wheely
Wheely : lift the front wheel off the ground
NB=0

8. Example 17-5

9. Example 17-7
mk=0.2
a= ?
If x > 0.5 m tipping will take place

10. Example 17-6
mm=125 kg
mR= 75 kg
a= ?
NB=?
FB=?
ms=? Minimum to
Lift front wheel

11. Example 17-8 mBD=100kg mAB=mCD= Neglect q = 30o w = 6 rad/s TA= ?
TB= ?
aG=?

12. Problem 17-43
m= 80 kg
mB=0.8
NA=?
NB=?
When rear wheel locks for break
a =? Deceleration aG
mBNB NA NB

13. Problem 17-43
m= 80 kg
mB=0.8
NA=?
NB=?
a =?
When traveling at constant velocity
and no break was applied NA NB
mBNB
a = 0

14. Problem 17-44
m= 80 kg
NA=?
NB=?
a =?
mk=? minimum
When rider applies the front break
and back wheel start to lift off the ground NA
NB=0
mkNA

15. Thank You