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Analysis of the Motion of a Harmonic Oscillator Coupled to Faraday's Law
New Phys.: Sae Mulli 2018; 68: 124~128
Published online January 31, 2018;
© 2018 New Physics: Sae Mulli.

Se-Hun KIM*1, Tae-Eon KO2, Se-Hyun LEE2, Kwang-Sun KIM2, Seung-Won OH2, Hyun-Seok KIM2

1 Faculty of Science Education and Research Institute of Education Science, Jeju National University, Jeju 63243, Korea
2 Seogwipo High School, Jeju 63585, Korea
Correspondence to:
Received September 8, 2017; Revised October 28, 2017; Accepted November 10, 2017.
cc This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
We investigated the effect of the current induced by test materials on simple harmonic motion. The breaking performance was studied by applying Faraday's law to the damped harmonic motion of a magnetic pendulum. The damping constants of the damped harmonic oscillation were different, depending upon the metallic and the magnetic properties of the oscillator. We analyzed the damped harmonic motion of a magnetic pendulum due to the current induced by test materials. Especially, the method of calculating the time constant of damped motion by using a regression analysis with a nonlinear curve-fitting method is very useful for evaluating advanced alloys and new materials in a non-contact manner. 
PACS numbers: 02.10.Ab, 41.85.Lc, 01.40.Fk
Keywords: Simple harmonic motion, Electromotive force, Faraday's law, Damped constant, Paramagnetic property

May 2018, 68 (5)
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