The book An Elementary Treatise On Theoretical Mechanics was written by author Alexander Ziwet Here you can read free online of An Elementary Treatise On Theoretical Mechanics book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is An Elementary Treatise On Theoretical Mechanics a good or bad book?
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'' C ' or A B C 215. To show the application of the conditions of equilibrium, let us consider the simple machine called the wheel and axle. It consists of a horizontal shaft (Fig. 71) resting with its ends on the supports or bear- ings A, B, and is intended to raise a weight W, suspended vertically by means of a rope wound' around the shaft. The driving force F is applied •b a a, a fR^lTr ^ ■■W Fig. 71. on the circumference of the "wheel," «>. in a vertical plane at right angles to the axis of... the shaft. It is required to find the relation between F and W for equilibrium, and the pressures on the bearings A,B. I30 STATICS. [216. Let r be the radius of the shaft, R that of the wheel, i.e. the lever- arm of the force F, and let F be inclined to the vertical at an angle Q ; then, with the co-ordinates and notations of the figure, the conditions %X=o, 2F=o, 2Z=o, give A,-\-B^=Q, Ay-\-By—W—F coi,6 = o, A,+£,+FsinO:=o, where A^, Ay, A^ are the components of the unknown reaction at A ■, B„ By, B„ those at B.
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