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EKSPERIMEN GAYA GESEK UNTUK MENGUJI NILAI KOEFISIEN GESEKAN STATIS KAYU PADA KAYU DENGAN PROGRAM MATLAB Puji Hariati Winingsih; Hidayati Hidayati
Science Tech: Jurnal Ilmu Pengetahuan dan Teknologi Vol 3 No 2 (2017): Agustus
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (550.336 KB) | DOI: 10.30738/jst.v3i2.1919

Abstract

This study aims at designing tools to test the coefficient of static timber friction on wood through friction force experiments. Crafting force experiments have been developed to determine the coefficient of static timber friction coefficient on wood. The data was collected 10 times each mass variation and obtained friction force data (fs). The data analysis used a weighted linear regression with REGLIN program written in Matlab and chisquere test. The results obtained by the form of coefficients of linear function are a0 = 0.309 and a1 = 1.937 with ralat (Sμ = 0.010). The amount of coefficient of static friction (μs) of wood on wood using Matlab is μs = (0.402 ± 0.010). This result is in accordance with the theory that μs = 0.40. The chisqure test (χ2) shows that there is a linear correlation between fs and m, with an opportunity value P () = 50.56%, so the data in this experiment is acceptable. 
TRACER STUDY PADA LULUSAN PRODI PENDIDIKAN FISIKA Yuli Prihatni; Puji Hariati Winingsih
SOSIOHUMANIORA: Jurnal Ilmiah Ilmu Sosial dan Humaniora Vol 2 No 2 (2016)
Publisher : LP2M Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (937.998 KB) | DOI: 10.30738/sosio.v2i2.521

Abstract

Tracer Study is important to be done, with the implementation of tracer studies will be obtained feedback can reveal useful information for Physical Education and Study programs can then be used for the improvement and quality assurance for internal and external quality assurance. This study aims to determine 1) Profile Physical education graduate study program, 2) Suitability Education Graduates by type of work, 3) to determine the input graduates for the development of Physics Education Study Program This research is a descriptive study with a quantitative approach. This study took a random sample. Data collection was done by using questionnaires and documentation. Analysis of data using statistical descriptive analysis in the form of tabulation and visualization in the form of pictures and graphics. The results showed that the profile of a graduate program of study Physical Education variegated, amounting to 92% consistently worked as a science teacher at the junior high and high school physics teacher. By 75% the salaries of graduates of Physics Education> 1 million. This means public recognition of the Physical Education graduates is quite high. Conformance level of education obtained by the type of work, the graduates who worked as a teacher of Physics at the equivalent of high school, 85% support the work, for a science teacher for 60% support for the work and other work only 30% support the work. The waiting period physical education graduate study program is as much as 96% get a job <6 months. Put alumni to study Physical Education Program is room for improvement in the field of infrastructure, soft skills, learning and quality of lecturers. Keywords: Tracer study, graduates, physics
Identification of Student Misconceptions Using Four Tier Diagnostic Instruments On Straight Motion Materials Sony Yunior Erlangga; Puji Hariati Winingsih; Handoyo Saputro
COMPTON: Jurnal Ilmiah Pendidikan Fisika Vol 8 No 2 (2021): COMPTON: Jurnal Ilmiah Pendidikan Fisika
Publisher : Universitas Sarjanawiyata Tamansiswa

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Abstract

This study aims to identify the quantity of students who misconceptions on the material of Straight Motion. The research subjects were 30 students of class X MIA 1 of Yogyakarta SahabatQu High School with purposive sampling technique. This type of research is a quantitative descriptive study with data collection techniques carried out by triangulation namely documentation of test results, interviews and questionnaires. The research instrument used was a three-tier test. the results of the most frequent misconception sequences were found in vertical motion (26%), speed and speed (18%), GLB (17%), distance and displacement (16%), and GLBB (15%). Based on the results of the interview showed the same thing.
Rancang Bangun Inverter Sederhana (IS) dengan Memanfaatkan IC 555 sebagai Pembangkit Tegangan Pada Mata Kuliah Elektronika I Handoyo Saputro; Sony Yunior Erlangga; Puji Hariati Winingsih
COMPTON: Jurnal Ilmiah Pendidikan Fisika Vol 8 No 2 (2021): COMPTON: Jurnal Ilmiah Pendidikan Fisika
Publisher : Universitas Sarjanawiyata Tamansiswa

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Abstract

The development of the industrial world in the current porous era, which continues to develop in various fields, certainly makes human life easier and full of challenges. In line with the rapid industrial progress, the need for electricity as an energy source is increasing. One of the household electricity needs is the use of an inverter which functions to convert 12 Volt DC voltage into 220 Volt 50 Hz AC voltage. This inverter functions as a backup electricity provider for both vehicles and household needs, as emergency power when the household electricity goes out. In this study, a Simple Inverter (IS) device will be made using IC 555 as a voltage generator needed in Electronics I learning, in which students learn about concepts and their applications. The purpose of this research is the design of IS teaching aids used to increase the voltage in the physics learning of Electronics I by determining the input power and output power. This type of research is development using a 4-D development model. The results of the IS tool test with product feasibility tests from 2 media experts and material experts with an average score of 4.64 or 94.2% and responses from 4 students with an average score of 4.73 or 95.8% so that it is included in the very good category. The average measured input power (63.0 ± 0.5) Wh and the resulting output power IS Innovation (2191 ± 0.5) Wh which means IS works at a Power Gain of 34.8 on a 5 Ah 12 V motor ACCU, with The power capacity used per 60 W is around 15.5 minutes and for ACCU 60 Ah 12 Volt it is around 3.1 hours