Elementary Introduction to Practical Mechanics: Illustrated by Numerous ExamplesLongmans, 1870 - 324 страници |
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Страница 6
... space between the freezing and boiling points into 180 equal parts , termed degrees , and by commencing the graduation 32 ° below freezing point , so that the freezing point is marked 32 ° , and the boiling point 212 ° . In the ...
... space between the freezing and boiling points into 180 equal parts , termed degrees , and by commencing the graduation 32 ° below freezing point , so that the freezing point is marked 32 ° , and the boiling point 212 ° . In the ...
Страница 18
... space ; thus a carpenter employed in planing wood works , since he causes the point of application of the force he exerts to move through a certain space , and the same is true of any agent that works in the sense here intended . For ...
... space ; thus a carpenter employed in planing wood works , since he causes the point of application of the force he exerts to move through a certain space , and the same is true of any agent that works in the sense here intended . For ...
Страница 36
... space ; ( 2 ) the total amount of work done in rais- ing a number of weights through different heights . D A FIG . 5 . As an introduction to the theorem which follows , it may be remarked , that if a con- stant force of P lbs . act ...
... space ; ( 2 ) the total amount of work done in rais- ing a number of weights through different heights . D A FIG . 5 . As an introduction to the theorem which follows , it may be remarked , that if a con- stant force of P lbs . act ...
Страница 37
... space , and if a curve be drawn in such a manner that the abscissa and corresponding ordinate of any point represent re- spectively the space through which the force has acted and the magnitude of the force , then will the area of the ...
... space , and if a curve be drawn in such a manner that the abscissa and corresponding ordinate of any point represent re- spectively the space through which the force has acted and the magnitude of the force , then will the area of the ...
Страница 38
... space represented contains feet ; this being so , the area of the curve in square inches will give the number of units of work . Ex . 134. — A rope 7 ft . long and weighing w lbs . per foot hangs by one end ; determine the number of ...
... space represented contains feet ; this being so , the area of the curve in square inches will give the number of units of work . Ex . 134. — A rope 7 ft . long and weighing w lbs . per foot hangs by one end ; determine the number of ...
Често срещани думи и фрази
accelerative effect 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 given hence horizontal horse-power inclined inclined plane last Example length limiting angle line of resistance mass middle point minute moment of inertia motion moving number of feet number of units oscillation P₁ parallel forces perpendicular plane pressure principle of moments Prop pulley 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 virtual velocities vols wall weight wheel Woodcuts wrought iron
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