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

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

Rectilinear Translation

Curvilinear Translation

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

Slipping Vs. Freely rotating mg FA=msNA NA NB

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

Example 17-5

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

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

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

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

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

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

Thank You