Natural philosophy for beginners, illustrations of the laws of motion and mechanics |
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Natural Philosophy for Beginners, Illustrations of the Laws of Motion and ... Natural Philosophy No preview available - 2018 |
Natural Philosophy for Beginners, Illustrations of the Laws of Motion and ... Natural Philosophy No preview available - 2023 |
Common terms and phrases
action angle annexed figure axis balance ball block boat calculating called capstan centre of gravity centrifugal force circumference compound consequently cord descend diagonal diameter distance effect elbow-joint equilibrium evident example feet fixed pulley force equal force of gravity forces acting friction greater half the weight horizontal horse illustration impelled inclined plane increased inertia kind of lever King's College King's College School law of motion length line of direction long arm machine manner mechanical advantage Mechanical Powers moveable pulley Natural Philosophy number of inches number of ounces parallel parallelogram Parallelogram of Forces passing perpendicular pinion placed pounds power and weight pressure principle produce proportion radius raised ratchet-wheel rection represented resistance rest rope round the wheel screw shewn short arm side space equal suppose surface suspended sustain teeth threads turn round velocity wedge weight multiplied wheel and axle wood
Popular passages
Page 8 - Every body continues in its state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by forces impressed upon it.
Page 162 - READINGS IN NATURAL THEOLOGY; Or, the Testimony of Nature to the Being, Perfections, and Government of God.
Page 122 - The weight is in each case attached to a moveable block, B, in which are fixed two or more wheels ; A is a fixed block, and the rope is successively passed over the wheels above and below, and, after passing over the last wheel above, is attached to the power. The tension of that part of the cord to which the power is attached is produced by the power, and therefore equivalent to it, and the same tension must extend throughout its whole length. The weight is sustained by all those parts of the cord...
Page 70 - Levers are commonly divided into three kinds, according to the relative positions of the power, the weight and the fulcrum. In a lever of the first kind, as in Jig-. 78., the fulcrum is between the power and weight. In a lever of the second kind, as in Jig.
Page 97 - The wheel and axle, or axis in peritrochio, is a machine much used, and is made in a variety of forms. It consists of a wheel with an axle fixed to it, so as to turn round with it ; the power being applied at the circumference of the wheel, the weight to be raised is fastened to & rope which coils round the axle.
Page 162 - The Student's Manual of Modern History : containing the Rise and Progress of the Principal European Nations, their Political History, and the Changes in their Social Condition. By W.
Page 140 - England, on the comparative effect of driving and pressing in large iron and copper bolts, that a man of medium strength striking with a mall weighing eighteen pounds, and having a handle forty-four inches in length, could start or drive a bolt about one-eighth of an inch at each blow ; and that it required the direct pressure of 107 tons to press the same bolt through that space, but it was found that a small additional weight would press the bolt completely home.* 200.
Page 141 - The sixth and last mechanical power is the screw ; which cannot properly be called a simple machine, because it is never used without the application of a lever or winch to assist in turning it ; and then it becomes a compound engine of a very great force, either in pressing the parts of bodies closer together, or in raising great weights. It may be conceived to be made by cutting a piece of paper, ABC (fig.