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This Blog contains all of my Journals for Iolani Physics 2008-2009.
Sunday, January 25, 2009
Torque and Moment of Intertia!
Here we can see torque in another great perspective. The equation for torque as we know is T=rf. R being the distance from axis to force, and f representing force. But another way we can look at the door handle is as I, moment of inertia. According to 11.6, a door handle like this one (solid cylinder with axis running along the center) is represented by I= .5MR^2. This amazing equation only requires you to know the radius and the mass. Once you have that, we have a masterpiece! By the way, just for reference, moment of inertia is "the measure of resistance to angular acceleration."
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2 comments:
i'm thinking about your ping pong thing coming up in the meeting periods... when you put spin on the ball, that's a torque too. (2/5mr^2 for the ball)
haha kool!
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