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Forringer, Edward Russell – Physics Teacher, 2022
In a 1993 book review, E. Pearlstein asks, "Why don't textbook authors begin their discussion of magnetism by talking about magnets? That's what students have experience with." A similar question can be asked, "Why don't professors have students measure the force between permanent magnets in introductory physics labs?" The…
Descriptors: Science Education, Physics, Magnets, Measurement
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Hazlett, Eric; Aragoneses, Andrés – Physics Teacher, 2018
We present a versatile experimental apparatus for exploring rotational motion through the interplay between the moment of inertia, torque, and rotational kinetic energy of a wheel. The heart of this experiment uses a 3D-printed wheel along with easily accessible stock components that allow for the adjustment of the moment of inertia while keeping…
Descriptors: Scientific Concepts, Science Instruction, Science Experiments, Science Equipment