## A Text Book of Elementary Mechanics: For the Use of Colleges and Schools |

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accelerated motion algebraic sum axis axle balance ball boat body moves body projected body weighing centimeter centre of gravity coefficient of friction constant velocity density direction distance fallen earth equal equation equilibrium example falling body feet per second force of gravity forces acting ft.lbs fulcrum geometrically given grams heat hence horizontal inches inclined plane initial velocity kilometers kilos kinetic energy length lever mass mechanical mechanical advantage meters per second middle point miles per hour millimeters molecules move uniformly opposite parallel forces parallelogram Parallelogram of Forces pendulum perpendicular position power acts preceding article pressure principle proportional pulley radius ratio represented resistance respectively rest resultant velocity right angles rope rotation screw side slide space passed steelyard straight line string supposed surface tension three forces tion triangle unit velocity acquired vibrate weight zero

### Popular passages

Page 63 - in a straight line, except in so far as it may be compelled by impressed forces to change that state. (2) Change of motion is proportional to the impressed force, and takes place in the direction of the straight line in which the force acts. (3) To every action there is always an equal and contrary reaction; or,

Page 63 - force, and takes place in the direction of the straight line in which the force acts. (3) To every action there is always an equal and contrary reaction; or, the mutual actions of two bodies are always equal and opposite in

Page 63 - are: (1) Every body continues in a state of rest, or of uniform motion in a straight line, except in so far as it may be compelled by impressed forces to change that state. (2) Change of motion is proportional to the impressed force, and takes place in the direction of the straight line in which the force acts. (3) To every action there is always an equal and contrary reaction;

Page 58 - which Every particle of matter attracts and is attracted by every other particle with a force which varies directly as the product of the masses and inversely as the square of the

Page 235 - Power acts along the plane, the Power is to the Weight as the height of the plane is to the length.

Page 58 - with a force which varies directly as the product of the masses and inversely as the square of the

Page 161 - forces with respect to any point in their plane is equal to the moment of their resultant. Let

Page 232 - each force is proportional to the sine of the angle between the directions of the other two.

Page 166 - (2) The algebraic sum of the moments of the forces about any point in the plane must be equal to

Page 118 - amount of heat required to raise one pound of •water one degree in temperature.