A Text-book of StaticsUniversity Correspondence College Press, 1894 - 220 σελίδες |
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Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD algebraic sum angle applied attached axle balance base beam body called centre of gravity components conditions of equilibrium couple denote diagonal direction distance Draw drawn effort equal and opposite equation equilibrium equivalent EXAMPLES fixed forces acting fulcrum given gives heavy Hence horizontal inclined length lever line of action magnitude mass mechanical advantage middle point moments move moveable parallel forces parallelogram particle passes perpendicular placed plane point of application polygon position Principle produced proof proportional proved pull pulleys pyramid raise reaction remain represented resistance resolved respectively rest resultant right angles rigid rope round sides single smooth square straight line string suppose surface taken taking tends third three forces triangle turn uniform vertical weight wheel whole
Δημοφιλή αποσπάσματα
Σελίδα 70 - Prove that the algebraic sum of the moments of two concurrent forces about any point in their plane is equal to the moment of their resultant about the same point.
Σελίδα 11 - Aberdeen. Second Edition. 6s. 6d. " In writing this book Mr. Mackenzie has produced an earnest and striking contribution to the ethical literature of the time.
Σελίδα 11 - Mr. Mackenzie's book is as nearly perfect as it could be. It covers the whole field, and for perspicuity and thoroughness leaves nothing to be desired. The pupil who masters it will find himself equipped with a sound grasp of the subject such as no one book with which we are acquainted has hitherto been equal to supplying. Not the least recommendation is the really interesting style of the work.
Σελίδα 9 - The parts of speech are dealt with historically as well as grammatically. The work is scholarly and accurate." — Schoolmaster. "The history of the language and etymology are both well and fully treated." — Teachers' Monthly. "Aptly and cleverly written.
Σελίδα 6 - The more advanced portions of the book-work are denoted by an asterisk, and the relative importance of rules and exceptions is shown by variety of type. Each Exercise is divided into three sections of progressive difficulty. "This useful little book.
Σελίδα 127 - Find the ratio of the power to the weight, when there is equilibrium in the system of pulleys in which each pulley hangs by a separate string ; first, neglecting, secondly, taking account of the weights of the pulleys.
Σελίδα 11 - If any number of forces acting at a point can be represented in magnitude and direction by the sides of a POLYGON taken in order, they are in equilibrium.
Σελίδα 8 - Containing passages in prose and verse representative of all the modern Authors. Edited by S. BARLET, B. es Sc.. Examiner in French to the College of Preceptors, and WF MASOM, MA Lond.
Σελίδα 2 - The work of men who have proved themselves to be possessed of the special qualifications necessary." — School Guardian. " By this time every one knows the material and uniform excellence of this series." — Practical Teacher. "The evident care, the clearly conceived plan, the genuine scholarship, and the general excellence of the productions in this series, give them, for the special purpose they are intended to accomplish, high claims to commendation — especially the commendation of diligent...
Σελίδα 9 - ... critical extracts are judiciously chosen, and Mr. Low's own writing is clear, effective for its purpose, and evidently the result of thorough knowledge and a very considerable ability to choose between good and bad." — National Observer. "It affords another example of the author's comprehensive grasp of his subject, combined with a true teacher's power of using such judicious condensation that the more salient points are brought clearly into view.