This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 edition. Excerpt: ...34. Preliminary Conceptions.--All change of motion is the result of force. If a body freed from the influence of all forces save that of gravity be thrown vertically upward, the action of gravity will cause it to return by the same path as that by which it rose until it rests upon the same spot from whence it ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 edition. Excerpt: ...34. Preliminary Conceptions.--All change of motion is the result of force. If a body freed from the influence of all forces save that of gravity be thrown vertically upward, the action of gravity will cause it to return by the same path as that by which it rose until it rests upon the same spot from whence it started. Or, if a body in the air is freed from the influence of all forces excepting that of the wind, it will move with the wind in the direction in which the wind is moving and at the same velocity as the wind. The effect of several forces acting at the same time upon a given body was originally stated by Newton as follows: "When any number of forces act simultaneously upon a body, then whether the body be originally at rest or in motion, each force produces exactly the same effect in magnitude and direction as if acting alone." This principle is often called the Law of Independence of Motion. By this law it will be seen that if a body, as, for example, a spark, be projected upwards in the presence of a strong wind, it will move upward in response to the initial impulse to a certain height and will then descend. This upward and downward movement will extend over the same vertical distances, and will take the same time as would be the case if the wind were not blowing. On the other hand, a spark thus projected will respond to the influence of the wind throughout the time it remains in the air to the same extent that it would if the force of gravitation were not in action. Being, therefore, under the influence of gravity, which tends to retard or to produce motion in vertical lines, and under the influence of the wrind, which tends to produce motion in horizontal lines, the actual path followed will be a curve. 35. The Path and...
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
