Yuliani, B. N., A. Harijanto, and L. Nuraini. “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, Vol. 10, no. 1, Jan. 2022, pp. 14-22, doi:10.24252/jpf.v10i1.25626.