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chap10

# chap10 - Rotation of a Rigid Object About a Fixed Axis...

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1 Rotation of a Rigid Object … … About a Fixed Axis Angular Position Rotating disc

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2 Angular Speed and Acceleration The angular velocity vector of RB points… 1 2 3 95% 4% 2% 1. Upwards (out of the plane) 2. Downwards (into the plane) 3. Not enough information to tell
3 The angular velocity vector of the Earth, in its rotational motion, points: 1 2 3 4 5 91% 4% 1% 4% 1% 1. Towards the North Pole 2. Towards the South Pole 3. Towards the Equator 4. Towards alpha-Centauri 5. Not enough information to tell You’re in a car, moving down the highway. The angular velocity of the wheels points: 1 2 3 4 5 91% 7% 1% 1% 0% 1. To the left 2. To the right 3. Straight upwards 4. Straight downwards 5. Not enough information to tell

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4 Rotational Kinematics Rotational Motion with Constant Angular Acceleration Angular and Linear Quantities
5 Example: CD Player Constant reading speed at the point of the laser-lens system: 1.3 m/s Innermost track 23 mm Outermost track 58 mm What is the angular speed at the innermost and outermost track?

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