Fig. 2

Setup for measuring the dynamic friction force: (1) Sliding surface‎, ‎(2) Plate carriage, ‎‎(3) Calibration masses,‎ (4) Hollow cylindrical,‎ (5) Powder material,‎ (6) Roller wheels, ‎(7). Hook,‎‎ (8) Hand wheel,‎ (9) Test stand,‎ (10) Small pulley, ‎(11) Wire,‎ (12) Force gauge, and‎ (13) Sliding ruler.