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Introductory Physics Homework Help
Find the angular acceleration of a hinged beam
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[QUOTE="UselessLadder, post: 4381975, member: 472437"] Hi, I have the following problem that I'm lost on. [ATTACH=full]161432[/ATTACH] The answer is 41.4 rad/s[SUP]2[/SUP] but I don't understand how to arrive at it.[h2]Homework Equations[/h2] ƩT=I(alpha) I=1/3 ML[SUP]2[/SUP] for a rod with axis through one end. [h2]The Attempt at a Solution[/h2] I solved the above equations to get (alpha)=T/I, but no matter what I try from here I get small numbers under 5. I'm confused on a couple points: is the center of gravity in the middle of the rod or the tip? Should I add the mass of the box (since the cable is cut, not the rope)? And I'm really confused as to how to write the sum of torques. I tried following [URL="http://farside.ph.utexas.edu/teaching/301/lectures/node113.html"]this example[/URL], with and without the box, but it I'm getting small numbers not even close to 41. Could someone please explain clearly to go about solving this? Thank you! [/QUOTE]
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Introductory Physics Homework Help
Find the angular acceleration of a hinged beam
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