The article presents the results of empirical research on the force required to slide a wheelchair on an incline. The study analyzed the impact of changes in pressure on the rear drive wheel and changes in the user's weight. The pressure value of the drive wheel was varied between 3 and 7 bar. The user's weight was 50, 70, and 90 kg. The study was conducted for incline angles ranging from 0° to 10°. The conducted research showed that for an incline angle corresponding to building standards (4.56°), the sliding force moments were as follows: 7.5 Nm for a user weight of 50 kg, 10 Nm for a user weight of 70 kg, and 12 Nm for a user weight of 90 kg. Furthermore, the study revealed a difference between the theoretical and empirical characteristics. This difference for an incline angle of 10° ranged from 1.82 to 2.33 Nm.