lec7 - L ECTURE 7 R OTATIONAL K INEMATICS DESCRIBING...

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L ECTURE 7: R OTATIONAL K INEMATICS ( DESCRIBING ANGULAR MOTION ) Angular motion Circular motion Centripetal/centrifugal force Combined translational and rotational motion Decomposition Spin
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Units of angular displacement 1. A basketball announcer says “Dribbles down the court, makes a 360-turn, and lays it in.” What units for angular motion are used? (a) revolutions (b) degrees (c) radians 2. A diving announcer says “She’ll be performing a 1 1 2 pike.” What units for angular motion are used? (a) revolutions (b) degrees (c) radians
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Angular velocity is a vector with a direction Hay
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What direction is this rotation? Hay
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Two angular directions are involved here Hay
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Angular velocity vectors add like other vectors Hay
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An example of angular acceleration Hay.
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Translational and Angular Motion are Analogous Hay
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3. Where is the angular speed greatest? (a) At the top (b) At the bottom (c) Horizontally to the right (d) Horizontally to the left (e) None of these Hay
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(a) Up
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lec7 - L ECTURE 7 R OTATIONAL K INEMATICS DESCRIBING...

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