Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 74
vibration.The rate of rotation co at any point whose latitude is X mavbe found most simply by regarding the angular velocitv ofthe earth as a vector, and taking its component in the direc-tion of the vertical through the place, thus, CO = 12 hr. *in X. Or it niaybe found as follows: Let PP (Tig.… … (67) s Fig. 43. whence the rate at which -& is described is(68) llr cb .J- = - Sill X.t t 6 But the angular velocitv of P is =———, and therefore t 12 hr. sm X. (69) t 12 hr. At a latitude of 453 this rotation is at the rate of 10.5degrees per hour. 64 SIMPLE TYPES OF MOTION. In starting the…
Physics
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