Elementary Introduction to Practical Mechanics: Illustrated by Numerous ExamplesLongmans, 1870 - 324 pages |
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Page 49
... Resultant and Components . If we consider any forces that keep a body in equilibrium , it is plain that any one of them balances all the others : thus , if three strings be FIG . 12 . P knotted together at a , and be pulled by forces of ...
... Resultant and Components . If we consider any forces that keep a body in equilibrium , it is plain that any one of them balances all the others : thus , if three strings be FIG . 12 . P knotted together at a , and be pulled by forces of ...
Page 50
... resultant of P and Q and P and Q are called the com- ponents of R ' . Hence we may state generally , Def . That force which is equivalent to any system of forces , is called their resultant . Def . Those forces which form a system ...
... resultant of P and Q and P and Q are called the com- ponents of R ' . Hence we may state generally , Def . That force which is equivalent to any system of forces , is called their resultant . Def . Those forces which form a system ...
Page 51
... resultant . Ans . 33 lbs . acting towards A. FIG . 13 . T B 28. The terms Reaction , Thrust , Strain , and Tension are of frequent occurrence in Mechanics . They may be most readily explained with reference to the equilibrium of two ...
... resultant . Ans . 33 lbs . acting towards A. FIG . 13 . T B 28. The terms Reaction , Thrust , Strain , and Tension are of frequent occurrence in Mechanics . They may be most readily explained with reference to the equilibrium of two ...
Page 52
... resultant ( R ' ) equals P + Q and acts through c along a line parallel to AP Or BQ and in the same direc- tion as P and Q. If c rests on a fixed point P and Q will balance about c and the fixed point will sustain a pressure R ' . FIG ...
... resultant ( R ' ) equals P + Q and acts through c along a line parallel to AP Or BQ and in the same direc- tion as P and Q. If c rests on a fixed point P and Q will balance about c and the fixed point will sustain a pressure R ' . FIG ...
Page 54
... Resultant acts 17.5 feet from one end . ( 2 ) Pressures on points of support respectively 9197 and 12,950 lbs . Ex . 176. If in the last case the upper block is shifted round through a right angle in such a manner that the middle point ...
... Resultant acts 17.5 feet from one end . ( 2 ) Pressures on points of support respectively 9197 and 12,950 lbs . Ex . 176. If in the last case the upper block is shifted round through a right angle in such a manner that the middle point ...
Common terms and phrases
ABCD angle of resistance angular angular velocity axis axle beam body brickwork cast iron centre of gravity circle circumference coefficient of friction Crown 8vo cubic foot curve cylinder described determine the number diameter direction distance draw Edition engine epicycloid equal equation equilibrium expended extrados forces acting formula friction frustum given hence horizontal horse-power inclined inclined plane last Example length limiting angle magnitude mass middle point minute modulus moment of inertia motion moving number of units oscillation P₁ parallel forces passing perpendicular plane pressure principle principle of moments Prop pulley R₁ radius raised reaction represent respectively rest resultant right angles rope round screw sliding space square inch steam suppose surface teeth thick thread tion triangle vertical vols wall weight wheel Woodcuts wrought iron
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