Mechanics for junior students |
Common terms and phrases
acceleration Answer arms atmosphere axle balance barometer called centimetre centre of gravity centre of pressure centrifugal force circumference column components compressed cord cubic centimetre cubic foot cubic inches cylinder density depth diameter displaced displaced fluid distance earth elasticity energy equation equilibrium fall feet long feet per second find the centre fluid foot-pounds forces acting friction fulcrum gases gramme Hence horizontal hydrometer immersed impact inclined plane inversely proportional length lever liquid mass mercury miles momentum motion move number of units parallel forces parallelogram particle passes pendulum perpendicular piston placed point of application position pressure produce pulley pump quantity radius represented resistance rest right angles rise screw side solid space described specific gravity square inch straight line surface three forces triangle tube uniform upwards valve velocity vertical vessel vibration volume weight wheel
Popular passages
Page 34 - Prove that the algebraic sum of the moments of two concurrent forces about any point in their plane is equal to the moment of their resultant about the same point.
Page 167 - ... inches long, closed at one end, filled with mercury, and inverted in a cup of mercury. The mercury...
Page 23 - When three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two.
Page 18 - If two forces acting on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, the resultant of these forces will be represented in magnitude and direction by that diagonal of the parallelogram which passes through the particle.
Page 92 - 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 force to change that state. 2. Change of motion is proportional to the force applied and takes place in the direction of the straight line in which the force acts.
Page 23 - If any number of forces, acting on a particle, be represented in magnitude and direction by the sides of a polygon taken...
Page 4 - The mean solar day is divided into 24 hours, each hour into 60 minutes, and each minute into 60 seconds.
Page 164 - The Specific Gravity of a substance is the ratio of its weight to that of an equal volume of water.
Page 170 - ... for a column of air of the height of the atmosphere is equal to a column of water of thirty-four feet, or one of mercury of twenty-nine inches, each having the same base.
Page 144 - specific gravity," and show that when a solid is immersed in a fluid, the weight lost is to the whole weight of the body as the specific gravity of the fluid is to that of the solid.