Angular Kinetics

Angular Kinetics - the MOI relative to this swing axis?...

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Angular Kinetics Chapter 7
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Moment of inertia Definition : quantity that describes angular inertia. Angular Inertia - the property of an object to resist changes in its angular motion. Mathematically:
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parallel axis theorem if an object is unconstrained and free to rotate about any axis, then it will rotate about an axis through its center of gravity (COG) HOWEVER, under some circumstances, the rotation of the object is forced to rotate about an eccentric axis eccentric axis - an axis that does not pass through an object’s COG
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example A 0.5-kg lacrosse stick has a MOI about a transverse axis through its COG of 0.10-kg m 2 . When a player swings the stick at an opponent, the axis of rotation is through the end of the stick, 0.8-m from the COG of the stick. What is
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Unformatted text preview: the MOI relative to this swing axis? Angular momentum angular interpretation of newtons 1st law the angular momentum of an object remains constant unless a net external torque is exerted on it Mathematically: angular interpretation of newtons second law the change in angular momentum of an object is proportional to the net external torque exerted on it, and this change is in the direction of the net external torque Mathematically: Angular impulse and momentum Mathematically: angular interpretation of Newtons 3rd law for every torque exerted by one object on another, the other object exerts an equal torque back on the first object but in the opposite direction...
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This note was uploaded on 09/08/2011 for the course ESS 3301 taught by Professor Plumlee during the Spring '10 term at Texas Tech.

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Angular Kinetics - the MOI relative to this swing axis?...

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