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- W4287691849 abstract "Problems involving rotating systems analyzed from an inertial frame, without invoking fictitious forces, is something that freshman students find difficult to understand in an introductory mechanics course. One of the problems that I workout in my intermediate mechanics class (which has students majoring in physics as well as students majoring in engineering and other science disciplines) is that of a bead sliding freely on a rod that is rotating uniformly in a horizontal plane. The motivation for working out this problem are two fold: (i) to train students in setting up Newton's equations of motion by identifying force components and equating to the corresponding mass times accelerations and (ii) to make the students familiar with the expressions for acceleration in the polar coordinates that we introduce at the beginning of the course. After guiding them through the solution which predicts an eventual radially outward motion for the bead (except for a very special initial condition), a typical question that gets asked is the following: The math is all fine sir, but how does the bead that is initially at rest at some point on the rod manage to move radially out if there are no radial forces? This article is about the ways I have tried to answer this question over the years and help students understand physics of the problem better." @default.
- W4287691849 created "2022-07-26" @default.
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- W4287691849 date "2020-08-06" @default.
- W4287691849 modified "2023-09-26" @default.
- W4287691849 title "Bead moving on a uniformly rotating rod studied from an inertial reference frame: Common misconceptions and possible ways to address them" @default.
- W4287691849 doi "https://doi.org/10.48550/arxiv.2008.05293" @default.
- W4287691849 hasPublicationYear "2020" @default.
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