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3 Keys to Rotational Motion



1) Use the parallels to linear motion: x and theta, v and omega, a and alpha, mass and moment of inertia, torque and force.

2) The many forms of torque: Torque = r x f, I times alpha, and net torque = rfsintheta

3) Angular momentum! L = r x p = r x mv and Net L = mrv times sintheta. Also the rate of change of L = torque


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I like how you are taking the key concepts of the course and making them your own by developing your own rules and understandings. Keep it up!

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I think free body diagrams are also very important! And looking at a problem to determine whether linear or rotational motion (or both!) are necessary to save a lot of hassle!

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