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# lecture10 - Circular Motion Newtons Second Law and circular...

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Physics 1D03 - Lecture 10 1 Circular Motion Circular Motion Newton’s Second Law and circular motion Serway and Jewett 6.1, 6.2

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Physics 1D03 - Lecture 10 2 Review: Circular Motion Kinematics has components a direction in change from , ii) of change of rate , i) 2 r v a dt v d a r t = = speed center tangential component, radial component, t a r a a
Physics 1D03 - Lecture 10 3 Particle dynamics : nothing new There is no “centrifugal force” has a radial component as well as (perhaps) a tangential component a m forces) (real = a Centrifugal Force Centrifugal force is a fictitious force – it is the result of you being in a non-intertial (accelerating) frame (see Sect 7.5 ).

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Physics 1D03 - Lecture 10 4 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. o v L m m
Physics 1D03 - Lecture 10 5 Non-Uniform Circular Motion Suppose a pendulum is moving fast enough that it swings in a complete vertical circle.

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lecture10 - Circular Motion Newtons Second Law and circular...

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