King Fahd University of Petroleum & Minerals Mechanical Engineering Dynamics ME 201 BY Dr. Meyassar N. Al-Haddad Lecture # 39

Measure of impact effect –Compare bullets with small mass and high velocity Ship with huge mass and slow velocity L is a vector -- points in same direction as v Unit: kg.m/s or slug.ft/s Linear Momentum

Measure of Rotational effect H is a vector quantity in the direction of  Unit: kg.m 2 /s or slug.ft 2 /s Angular Momentum

Translation Rotation About a Fixed Axis General Plane Motion

Principle of Impulse and Momentum Principle of Angular Impulse and Momentum Principle of Linear Impulse and Momentum

For the entire system

Example 19-2

Example 19-3

Example 19-4