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All Journal Momentum: Physics Education Journal
Mustafa Erol
Dokuz Eylül University, Turkey
Physics

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Measurement of spring constants of various spring-mass systems by using smartphones: a teaching proposal Mustafa Erol; Kadir HocaoÄŸlu; Åžeyda Kaya
Momentum: Physics Education Journal Vol 4 No 1 (2020)
Publisher : Universitas PGRI Kanjuruhan Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (528.133 KB) | DOI: 10.21067/mpej.v4i1.4150

Abstract

This study aims to develop a teaching proposal to measure spring constants of various spring-mass systems by means of the smartphones. Specifically, a single spring-mass system, a serial connected and a parallel connected spring systems are experi-mentally resolved, by using the ambient light sensor of the smartphones. The measurements are achieved by simply recording the light intensity, detected by the oscillating smartphone, as a function of time for the simple harmonic motion. Using the light intensity-time graphs, the average periods and eventually the spring constants are estimated and the outcomes are compared with the theoretical results. The overall outcomes of the work indicate some 3,3 % relative error for the serial connected springs and 10,8 % relative error for the parallel connected springs. The approach is important in the sense that the apparatus directly plots instantaneous momentum-time graphs and it creates an enjoyable and beneficial teaching atmosphere.
Mathematical modelling of electrical potential difference in a non-uniform electric field Mustafa Erol; İldahan Özdeyiş Çolak
Momentum: Physics Education Journal Vol 4 No 2 (2020)
Publisher : Universitas PGRI Kanjuruhan Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1224.84 KB) | DOI: 10.21067/mpej.v4i2.4440

Abstract

This work offers an unproblematic teaching tool for the instruction of challeng-ing concept of electric potential difference in a non-uniform electric field. Specifically, mathematical modelling process is employed and managed to comprehend and teach exceedingly difficult concepts of uniform and non-uniform electric fields, electrical potential difference, scalar products of vectors and also concept of path integral. In order to accomplish those tasks, initially a basic conducting panel/sheet, that is simply a wet cardboard, is designed as a part of the apparatus, together with a dc power supply, a multi meter and connecting cables. The established method is interesting in the sense that the 3D wet cardboard is novel, very practical and minimal costing, hence the approach offers physics educators fresh teaching routes and opportunities to clarify the puzzling concept of electrical potential difference and further.
Resolution of electric field distribution and conductivity in a non-uniform electric field: A teaching proposal Mustafa Erol; İldahan Özdeyiş Çolak
Momentum: Physics Education Journal Vol 5 No 1 (2021)
Publisher : Universitas PGRI Kanjuruhan Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21067/mpej.v5i1.4576

Abstract

This work offers an alternative teaching proposal for the instruction of challenging concepts of electric field distribution and specific conductivity in a non-uniform electric field. Specifically, electric field lines are initially plotted and later on the relation between the electric potential difference and electric field strength is validated. Additionally, on a selected electric field line, electric field strength versus path length and also conductivity versus path length are plotted to comprehend and teach exceedingly difficult concepts of uniform and non-uniform electric fields. In order to accomplish those tasks, a basic conducting sheet, that is simply a wet cardboard, is designed as a part of the apparatus together with a dc power supply, a multi meter and connecting cables. The established method is interesting in the sense that designed the conducting wet cardboard is novel, very practical, beneficial and minimal costing, hence the approach offers physics educators fresh teaching routes and opportunities to clarify the puzzling concepts of electrical field and conductivity.
Conceptual framework on teaching capacitors and inductors Mustafa Erol; Esra Bilal Önder
Momentum: Physics Education Journal Vol 5 No 2 (2021)
Publisher : Universitas PGRI Kanjuruhan Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21067/mpej.v5i2.5630

Abstract

The objective of this work is to suggest a conceptual framework on teaching capacitors and inductors in order to improve teaching abilities and to eliminate some fundamental misconceptions. The effort initially deals with resolution of physical structure and structural concepts/parameters of the devices and then resolves DC and AC responses of the inductors and capacitors. The resolutions are achieved by considering basic serious RL and RC circuits and resolving the circuits both theoretically and experimentally. As a result, an alternative teaching approach is offered and also a novel instructional material is developed and suggested. Some teaching clues are briefly inserted to guide teachers/instructors to reach a higher comprehension level. It is believed that the implications of the developed teaching material would be quite high and beneficial.
Measuring thermal conductivity via basic home equipment Mustafa Erol; Muhammed Emre Kuzucu
Momentum: Physics Education Journal Vol. 6 No. 1 (2022)
Publisher : Universitas PGRI Kanjuruhan Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21067/mpej.v6i1.6306

Abstract

This work reports a trouble-free alternative measuring approach for instructing the puzzling concept of thermal conductivity. In order to accomplish the task, a basic daily used home equipment is employed together with a mathematical modelling approach. Specifically, a simple approach to measure the thermal conductivity coefficient is described and temperature dependence of the thermal conductivity is mathematically modelled. Developed method is interesting in the sense that the experimental equipment is very practical and minimal costing, hence the approach offers physics educators fresh teaching routes and opportunities to clarify the puzzling concept of thermal conductivity and related concepts.
Co-Authors İldahan Özdeyiş Çolak Şeyda Kaya Esra Bilal Önder Kadir Hocaoğlu Muhammed Emre Kuzucu