An Elementary Treatise on Rational Mechanics: By the Rev. John KerrWilliam Hamilton, 1866 - 295 pages |
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An Elementary Treatise on Rational Mechanics: By the Rev. John Kerr John Kerr Affichage d'extraits - 1866 |
Expressions et termes fréquents
absolute units acceleration angular velocity attraction axes balance ball centre of gravity change of motion circle coefficient of friction component constant couple cycloid cylinder decomposed direction distance Earth elasticity equal and opposite equation equilibrium feet fixed point forces act forces applied forces which act friction inclined plane inertia infinitely small instant length lever line of action magnet magnitude mass measured middle point moment of inertia moments moving oscillation P₁ parallel forces pendulum perpendicular point of application position pressure projected Prop proportional pulley radius ratio represented resolved rest resultant right angles rigid body rotation round Shew simple pendulum sliding sphere straight line string Suppose surface tangent Theorem three forces triangle uniform vertical vis viva viva weight wheel
Fréquemment cités
Page 203 - The qualities of bodies, which admit neither intension nor remission of degrees, and which are found to belong to all bodies within the reach of our experiments, are to be esteemed the universal qualities of all bodies whatsoever.
Page 7 - 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 42 - The Arm of a couple is the perpendicular distance between the lines of action of the two forces...
Page 108 - Find how far up the ladder a man whose weight is four times that of the ladder may ascend before it begins to slip, the foot of the ladder being 6 feet from the wall.
Page 150 - A ball is projected from the middle point of one side of a billiard-table, so as to strike in succession one of the sides adjacent to it, the side opposite to it, and a ball placed in the centre of the table...
Page 171 - ... it will lose daily, gravity being supposed to vary inversely as the square of the distance from the centre of the Earth, aud the radius of the Earth to be four thousand miles.
Page 250 - The diameter of the piston of an engine is 80 in., the mean pressure of the steam is 12 Ibs. per square inch, the length of the stroke is 10 ft., the number of strokes made per minute is 11.
Page 129 - A person travelling eastward at the rate of 4 miles an hour, observes that the wind seems to blow directly from the north...
Page 230 - The highest point of the wheel of a carriage, rolling on a horizontal road, moves twice as fast as each of two points in the rim, whose distance from the ground is half the radius of the wheel.
Page 131 - To every action there is an equal and opposite reaction ; or, the mutual actions of two bodies are always equal and oppositely directed.