Introduction to the Mechanical Principles of Carpentry: In Two Parts. Part I. Strength and Stiffness of Timber. Part II. Statics Applied to Constructions of Timber
Introduction to the Mechanical Principles of Carpentry: In Two Parts. Part I. Strength and Stiffness of Timber. Part II. Statics Applied to Constructions of Timber
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. 1827 Excerpt: ...force sustained by A D, and D f that sustained by B D. 155.1 We may farther suppose the weight C to act upon the point D by pressure, as in fig. 3, instead of being suspended, as in the former cases. But it is evident, that if C D is perpendicular to the horizon, tbe weight C acting upon the point D in the same ...
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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. 1827 Excerpt: ...force sustained by A D, and D f that sustained by B D. 155.1 We may farther suppose the weight C to act upon the point D by pressure, as in fig. 3, instead of being suspended, as in the former cases. But it is evident, that if C D is perpendicular to the horizon, tbe weight C acting upon the point D in the same direction, and with the same force, as if suspended as in the last case, must require the same force to be exerted by A D and B D to sustain it. If therefore we wish to know what force each of the supports, A D and B D, will have to sustain, in consequence of the pressure of the weight C, we have only to draw the vertical line D e, of a convenient length to represent the weight C, and then from the point e to draw e f parallel to A D; and as in the former case, e f will represent the force, which must be exerted by A D; and D f that which must be exerted by D B. 156. From these two last examples, we may infer, that if any force act upon a point, it may be balanced by any two other forces acting upon the same point, provided the three forces are proportional to the three sides of any triangle, and act in directions parallel to those sides. /. 157. It appears then, that we can find one force, which will bal ance any two given forces. (153) j Or, we can find two forces, which will balance any one given force. (156) The former is called the composition of forces, and the latter the resolution. This one force, whichjby the composition is found equal to the two others, is called their resultant. We are not limited to two forces. We can, (as will be shown farther onfind a resultant to anynumber of forces: or we can resolve one force into any number of forces., Examples, (i. Let the weight C be 1000 lbs., the beam A D (fig. 3) 6 feet, A B 8 feet, and resting ..
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Add this copy of Introduction to the Mechanical Principles of Carpentry: to cart. $57.08, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2015 by Palala Press.
Add this copy of Introduction to the Mechanical Principles of Carpentry: to cart. $46.69, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2010 by Nabu Press.
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