YULIANI, B. N.; HARIJANTO, A.; NURAINI, L. THE DESIGN OF FRICTION FORCE PRACTICUM TOOL ON INCLINED FIELD OBJECTS WITH A PHOTOGATE SENSOR BASED ON ARDUINO. JPF (Jurnal Pendidikan Fisika) Universitas Islam Negeri Alauddin Makassar, v. 10, n. 1, p. 14-22, 24 Jan. 2022.