Millikan, Robert Andrews, Gale, Henry Gordon · Boston : Ginn and Co. · leaf 172
300 g. and Fis 800 g., the coefficient of friction is |-^ = .375. The coeffi-cient of iron on iron is about .2; of oak on oak, about .4. 174. Rolling friction. The chief canse of sliding friction is the inter-locking of minute projections. When a round solid rolls over a smoothsurface, the…
Physics
Internet Archive · UBC Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer01inte-383-142.webp)
