Elementary natural philosophy : designed for high schools and academies (1881)
Griffin, La Roy F. (La Roy Freese), 1844-1916 · Philadelphia : Sower, Potts & Co. · leaf 61
THE INCLINED PLANE. 51 … Fig. 53. of speed causes them to break.The motion of the planets in theirorbits is an instance of the exactbalancing of centrifugal and cen-tripetal forces. 179. The flattening of the earthat the poles has been caused bycentrifugal force. Fig. 53 illus-trates the process. Rapid revolu-tion causes…
Physics
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