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Unformatted text preview: Engineers Without Borders Freshmen Leadership Board Monday, 9/26, 7 pm Lind 5 General Chapter Meeting Wednesday, 9/28, 7 pm Tate 133 • Get involved with a student group engineering sustainable solutions in international partner communities • Leadership positions • Resume builder • Meet people • Have fun! You Decide 2 Kinematics of Circular Motion Physics 1301, Fall 2011: Class 9 Wednesday, September 21, 2011 3 Objectives: Wednesday, September 21 • Kinematics of Circular Motion • Angular Displacement, velocity, acceleration • Problems in angular kinematics 4 Demonstrations • 1d10.20 Cycloid generator • 1d10.40 Mounted wheel • 1d10.50 Ball on edge of disk • 1d10.65 LEDs on turntable • 1d50.10 Ball on a string Kinematics of Circular Motion • So far, we have described linear motion in 1, 2 and 3 dimensions using vectors (arrows) • An important class of motion is circular, as contrasted to linear • We can also represent circular kinematic quantities using vectors • The circular displacement vector points along the axis of rotation . The direction of the rotation is given by righthand rule . 5 Circular Kinematic Variables • The circular kinematic variables are: • Angular displacement (radians) • Angular velocity (radians/s) • Angular acceleration (radians/s 2 ) 6 θ , ω and α ω = d θ dt , α = d ω dt = d 2 θ dt 2 Circular and Linear Variables...
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This note was uploaded on 11/10/2011 for the course PHYS 1301W taught by Professor Marshak during the Fall '08 term at Minnesota.
 Fall '08
 Marshak
 Physics

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