Principles of MechanicsLongmans, Green, and Company, 1874 - 313 من الصفحات |
المحتوى
| 62 | |
| 69 | |
| 75 | |
| 81 | |
| 87 | |
| 95 | |
| 102 | |
| 108 | |
| 115 | |
| 122 | |
| 129 | |
| 142 | |
| 148 | |
| 154 | |
| 162 | |
| 219 | |
| 229 | |
| 235 | |
| 243 | |
| 249 | |
| 255 | |
| 262 | |
| 268 | |
| 272 | |
| 278 | |
| 285 | |
| 294 | |
| 301 | |
| 308 | |
طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
action angle angle of repose angular velocity apparatus axis axle beam body Boyle's law bullet centre of gravity compressed constant cubic curve cylinder depth described diameter direction disc elasticity energy engine equilibrium fluid foot-pounds forces acting friction fulcrum gases heat Hence horizontal plane inches of mercury inclined inclined plane increase iron lever lifting linear velocity liquid load mass measure mechanical mercury molecules move P₁ parallel forces parallelogram of forces particles perpendicular piston plunger portion pound weight pounds pressure principle Prop pull pulley pump radius represented resistance rest resultant revolutions per minute rotation Science Exam screw side solid space specific gravity square inch steam straight line string surface tension tons triangle true plane tube valve vertical vessel volume weight wheel
مقاطع مشهورة
الصفحة 13 - Every body continues in its 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.
الصفحة 40 - 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 in the same straight line.
الصفحة 119 - That the quantity of heat produced by the friction of bodies, whether solid or liquid, is always proportional to the quantity of force expended.
الصفحة 138 - Hence the above expression measures the importance of the matter which is rotating, or the importance of its inertia, and is therefore called the moment of inertia of the rotating body. THE DIAGRAM OF WORK. 68. The work done by a force can be represented to the eye by a diagram, and engineers habitually refer to such outline figures, in order to estimate at a glance the quantity of work expended in any mechanical operation. It has been stated that the work done by a constant force is the product...
الصفحة 71 - If three forces, acting at a point, be represented in magnitude and direction by the sides of a triangle taken in order, they will be in equilibrium.
الصفحة 181 - The specific gravity of a petroleum oil and of mixtures of petroleum products with other substances is the ratio of the weight of a given volume of the material at a temperature of 60° F.
الصفحة 245 - Ex. 2. A body is projected vertically upwards with a velocity of 100 feet per second : find its height after 3 seconds.
الصفحة 81 - ... there will be equilibrium when the sum of the moments of the forces acting to turn the body in one direction is equal to the sum of the moments of the forces acting to turn it in the opposite direction. That point in the axis about which the moments are estimated is often called the centre of moments. THE CONDITIONS OF EQUILIBRIUM OF ANY NUMBER OF FORCES ACTING ON A BODY IN ONE PLANE.
الصفحة 185 - ... is equal to the area of the surface, and altitude equal to the depth of the centre of gravity of the surface below the surface of the fluid.
الصفحة 181 - C.) to the weight of an equal volume of distilled water at the same temperature, both weights being corrected for the buoyancy of air.