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acceleration of velocity amount angle angular balance base beam body called centre of gravity circle components condition considered constant described determine direction distance draw drawn earth effect energy equal equations equilibrium evident example expressed falling feet forces acting friction given Hence horizontal inclined plane instant joining kinetic energy length lever line of action machine magnitude and direction mass measured meet moments momentum motion moving parallel parallel forces parallelogram particle passing path perpendicular plane portions position produce projected proportional prove pulleys quantity radius ratio reaction regarded relative represented resistance resolved respectively rest resultant rigid body round sides smooth space straight line string supported supposed surface taken third tion triangle uniform uniformly unit vertical weight whole
Сторінка 8 - To every action there is always an equal and contrary reaction ; or the mutual actions of any two bodies are always equal and oppositely directed.
Сторінка 249 - that every particle of matter in the universe attracts every other particle, with a force whose direction is that of the line joining the two, and whose magnitude is directly as the product of their masses, and inversely as the square of their distances from each other.
Сторінка 280 - Price 3$. 6d. On the STRENGTH of MATERIALS and STRUCTURES : the Strength of Materials as depending on their quality and as ascertained by Testing Apparatus ; the Strength of Structures, as depending on their form and arrangement, and on the materials of which they are composed. By Sir J. ANDERSON, CE &c.
Сторінка 220 - Change of motion is proportional to the impressed force and takes place in the direction of the straight line in which the force acts.
Сторінка 16 - The Parallelogram of Forces.— If two forces acting at a point be represented in magnitude and direction by the...
Сторінка 279 - THE ELEMENTS OF MECHANISM, designed for Students of Applied Mechanics. By TM GOODEVE, MA, Professor of Natural Philosophy in King's College, London. With 206 Figures on Wood. Post 8vo 6
Сторінка 123 - Powers, are certain simple instruments, commonly employed for raising greater weights, or overcoming greater resistances, than could be effected by the natural strength without them. These are usually accounted six in number, viz. the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw.
Сторінка 95 - A heavy equilateral triangle hung up on a smooth peg by a string, the ends of which are attached to two of its angular points, rests with one of its sides vertical — shew that the length of the string is double the altitude of the triangle.