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King Fahd University of Petroleum Minerals

• Mechanical Engineering
• Dynamics ME 201
• BY
• Dr. Meyassar N. Al-Haddad
• Lecture 39

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Linear Momentum

• 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

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Angular Momentum

• Measure of Rotational effect
• H is a vector quantity in the direction of w
• Unit kg.m2/s or slug.ft2/s

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Translation
Rotation About a Fixed Axis
General Plane Motion
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Principle of Impulse and Momentum

• Principle of Linear Impulse and Momentum

Principle of Angular Impulse and Momentum
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For the entire system
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Example 19-2
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Example 19-3
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Example 19-3
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Example 19-4
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Thank you