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Unformatted text preview: 1 Physics 1D03 - Lecture 10 Circular Motion Circular Motion - Dynamics Dynamics Newtons Second Law and circular motion Serway and Jewett 6.1, 6.2 Suggested Problems: Chapter 6 Practice Problems : 1, 6, 9, 17, 44, 45, 53 Physics 1D03 - Lecture 10 Review: Circular Motion Kinematics has components a r direction in change from , ii) of change of rate , i) 2 r v a dt v d a r t = = speed r center tangential component, radial component, t a r a a r Physics 1D03 - Lecture 10 Particle dynamics : nothing new There is no centrifugal force has a radial component component as well as (perhaps) a tangential component a m r forces) (real = a r Centrifugal Force Physics 1D03 - Lecture 10 Example: Pendulum Calculate the tension in the string when the pendulum is at the lowest point in the swing. Given : mass m , length L , and speed at the lowest point. L o v r m m 2 Physics 1D03 - Lecture 10 Quiz The earth is not exactly spherical, so the gravitational field g depends on latitude. depends on latitude....
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