This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Wheel basics.svg Image of wheel on sloping surface showing eccentricity of force through axle with contact point of wheel with surface en Image Wheel basics Gregorydavid Image created by User TS Death Angel from original on April Mechanics Wheels
Page 2023 Free-images.com. All images are Public Domain