Figure 2
The diagram illustrates a locomotive with four wheelsets, each connected to springs. The locomotive is subjected to various forces and dimensions. The force F is applied horizontally to the left at a height H. The weight W acts downward at the center of the locomotive. Each wheelset has a weight labeled as W1, W2, W3, and W4, with corresponding frictional forces f1, f2, f3, and f4 acting horizontally to the right. The distance between the wheelsets is labeled as l, and the distance between the inner wheelsets is labeled as L. The height from the ground to the top of the locomotive is H, and the height from the ground to the axles is h. The velocity v is indicated to the right.Locomotive with four wheelsets and force analysis. Source: Authors’ own work