The Elements of Mechanics |
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Common terms and phrases
accelerating force action angle applied arch axis axle ball beam becomes bridge called cast iron centre of gravity centrifugal force circle circular arc circumference co-ordinates components condition of equilibrium constant curve cycloid cylinder density determined diameter direction distance dome earth elastic equal equation exerted experiments extrados feet fibres fluid force of gravity forces act forces that act formula friction hence hydrometer inclined plane increase inferred intensity inversely latter length lever liquid magnitude manner mass measure mercury moment of inertia move moveable obtain oscillation parallel forces particles pendulum perpendicular point of application position pressure principle proportioned pulley radius ratio rectangular rection represented resistance rest resultant rope rotation screw space specific gravity square Strength of Materials substances supported surface suspended temperature threads tion tube unit velocity vertical vessel voussoirs wedge weight wheel wheel and axle whence
Popular passages
Page 337 - SPECIFIC GRAVITY. THE Specific Gravity of a body, is the ratio of its weight to the weight of an equal volume of some other body assumed as a standard.
Page 498 - Our second remark is, that this difference of gravity becomes less as we ascend from the surface, and at a certain point is neutralized: while, on the other hand, the elasticity, which is equal at the surface, varies with the height ; and the Barometer stands higher, at equal elevations, in the equatorial than in the polar column.
Page 164 - There is an equilibrium upon the wheel and axle when the power is to the weight as the radius of the axle to the radius of the wheel.
Page 327 - He first established the truth that a body plunged in a fluid loses as much of its weight as is equal to the weight of an equal volume of the fluid it displaces.
Page 251 - ... would deviate from the horizontal as far as the mechanism would permit, and would afford no indication of approach to equality in the weights. With equal weights it would remain in equilibrium in any position. In virtue of possessing this last property, such a balance is called indifferent. Practically the distance between the centre of gravity and the point of suspension must not be less than a certain amount depending on the use for which the balance is designed. The proper distance is determined...
Page 130 - These are usually accounted six in number, viz. the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw.
Page 299 - Aroirdupois. 1 myriagramme = 22-0485 Ibs. Avoirdupois. 1 quintal = 1 cwt. 3 qrs. 25 Ibs. The unit of superficial measure is "the are, a surface of ten metres each way, or 100 square metres. The unit of measures of capacity is the litre, a vessel containing the cube of a tenth part of the metre, and equivalent, to 0-220097 parts of the British imperial gallon. The standard temperature is 32° F. All the divisions and multiples of the units are decimal.
Page 338 - This discovery furnished him with the method of determining the specific gravity of pure gold and pure silver. These being known, he had only to take the specific gravity of the crown, which (supposing no alteration in volume when the two...
Page 387 - From the foregoing statements it may be safely inferred that " the mean height of the barometer at the level of the sea being the same in every part of the globe...
Page 356 - ... fluid will be compelled to follow by the pressure of the atmosphere on its surface in the well. When the piston is again depressed, the water flows through the valve in it, and ascends into the barrel, and by the succeeding strokes of the piston is lifted up until it reaches and flows out of the spout, F. " Although in theory the limit of the height to which water may be raised by the sucking pump, from the surface of the fluid in the well to the highest position of the...