Artículos relacionados a The elements of Statics, dynamics, and hydrostatics
Sinopsis
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. 1850 Excerpt: ...thus considered is, for the sake of distinction, termed accelerating force; and that too, whether its effect be to accelerate or to retard the motion of the body. 100. The second law of motion. When a force acts upon a body in motion, the change of motion produced in the same, both in magnitude and direction, as if the force acted on the body at rest. Thus if a body move along the line A B, with such a velocity, that it would describe the space A B in one second; and if when it arrives at A, a force act upon it such as of itself to cause a body to pass from A to C in one second, then at the end of the second the body will be found at D; the change of motion represented by B D being the same in magnitude and direction as if the force had acted upon the body when at rest. Each force produces its full effect in its own direction. This law is proved by such experiments as the following:--If a stone be dropped from the top of the mast, when a vessel is moving uniformly in any direction, and with any velocity, it will foll at the foot of the mast, just as it would if the vessel had been at rest. If from any point a ball be let fall, and another ball be at the same instant projected forward horizontally with any velocity whatever, both balls will strike the ground at the same time. Here the ball at rest and the ball in motion are acted upon by the same vertical force, namely, the force of gravity, and both are caused to pass through the same vertical space in the same time. If a person in an open railway carriage throw a ball perpendicularly upwards, it will not fall in rear of the train, but will drop into the hands of the individual who projected it. 101. The third law of motion. When pressure communicates motion to a body, the accelerating force varies as the r...
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Reseña del editor
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. 1850 Excerpt: ...thus considered is, for the sake of distinction, termed accelerating force; and that too, whether its effect be to accelerate or to retard the motion of the body. 100. The second law of motion. When a force acts upon a body in motion, the change of motion produced in the same, both in magnitude and direction, as if the force acted on the body at rest. Thus if a body move along the line A B, with such a velocity, that it would describe the space A B in one second; and if when it arrives at A, a force act upon it such as of itself to cause a body to pass from A to C in one second, then at the end of the second the body will be found at D; the change of motion represented by B D being the same in magnitude and direction as if the force had acted upon the body when at rest. Each force produces its full effect in its own direction. This law is proved by such experiments as the following:--If a stone be dropped from the top of the mast, when a vessel is moving uniformly in any direction, and with any velocity, it will foll at the foot of the mast, just as it would if the vessel had been at rest. If from any point a ball be let fall, and another ball be at the same instant projected forward horizontally with any velocity whatever, both balls will strike the ground at the same time. Here the ball at rest and the ball in motion are acted upon by the same vertical force, namely, the force of gravity, and both are caused to pass through the same vertical space in the same time. If a person in an open railway carriage throw a ball perpendicularly upwards, it will not fall in rear of the train, but will drop into the hands of the individual who projected it. 101. The third law of motion. When pressure communicates motion to a body, the accelerating force varies as the r...
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