lo13 - PH 1110, A Term 2007, Lecture 13 Kinematics Dynamics...

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PH 1110, A Term 2007, Lecture 13 Kinematics Dynamics Energy and Momentum Torque and Equilibrium This time: Torque and equilibrium Rotational motion Τ = r X F , Magnitude | Τ | = rF sin θ rF , Direction of torque perpendicular to plane of r and F . In this course, in the +k or –k direction. Conditions for equilibrium, F = 0 , τ = 0 . Puzzlers and other mental health breaks
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Puzzlers: Are the torques on the beam positive (out of the page), negative (into the page), or zero? i j F 1 F 2 F 3 F 5 F 4 1. Positive +k (CCW, out of page) 2. Negative –k (CW, into page) 3. Zero (no rotation around origin)
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YouTube videos: • To impress your section instructor, you may make a YouTube video on a topic in mechanics. It must be less than two minutes in duration. When posted at YouTube, its name should begin with “WPI Physics.” • Please don’t let your enthusiasm for making a video
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This note was uploaded on 04/29/2008 for the course PH 1110 taught by Professor Kiel during the Fall '08 term at WPI.

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lo13 - PH 1110, A Term 2007, Lecture 13 Kinematics Dynamics...

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