# STUDI TEORITIS PERBANDINGAN APLIKASI MODEL GETARAN HARMONIK LOGARITMIK dengan OSILATOR ROTASI PEGAS TORSIONAL UNTUK DIKEMBANGKAN PADA FENOMENA EKONOMI

• Kunlestiowati Hadiningrum Politeknik Negeri Bandung, Jl. Terusan Gegerkalong Hilir, Ds. Ciwaruga, Kotak Pos 1234, Bandung
• Nani Yuningsih Politeknik Negeri Bandung, Jl. Terusan Gegerkalong Hilir, Ds. Ciwaruga, Kotak Pos 1234, Bandung
• Sardjito Sardjito Politeknik Negeri Bandung, Jl. Terusan Gegerkalong Hilir, Ds. Ciwaruga, Kotak Pos 1234, Bandung

### Abstract

Abstrak

Kata-kata kunci: getaran, massa berubah, fungsi harmonik logaritmik, pendulum torsi

Abstract

The overview of the mass-loaded spring system could produce vibration motion characterized by the change of the load position over time following the harmonic oscillation function.If the load mass is constant, then the function of position to time will be a pure harmonic form of sine wave and / or cosine.If the load mass is changed linearly, it will result in the relaxation of the vibration period, so the solution of the load position is in the form of a harmonic logarithmic oscillation function.For a laboratory scale review, this condition can be applied to the rotational oscillation torsion pendulum.The loaded spring model has been developed to describe the dynamics of the exchange rate of the rupiah against foreign exchange, especially when there is significant interference resulting in a spike, given the economic situation in Indonesia, there are sometimes fluctuations that cause unexpected economic hikes.This model begins with the analogy of physical and economic phenomenon. However, this model still needs to be fixed by incorporating the interference factor that works in a very short time not only at the beginning, in order to produce delta function or discrete function so that the solution can be reviewed with discrete approach.

Keywords: vibration, mass changing, harmonic logarithmic function, torsion pendulum.

Published
2017-10-30
How to Cite
Hadiningrum, K., Yuningsih, N., & Sardjito, S. (2017). STUDI TEORITIS PERBANDINGAN APLIKASI MODEL GETARAN HARMONIK LOGARITMIK dengan OSILATOR ROTASI PEGAS TORSIONAL UNTUK DIKEMBANGKAN PADA FENOMENA EKONOMI. PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL), 6, SNF2017-CIP. https://doi.org/10.21009/03.SNF2017.02.CIP.11
Section
Computation and Instrumentation Physics