This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

A Manual of the Mechanics of Engineering and of the Construction of Machines: With an Introduction to the Calculus. Designed As a Text-Book for ... Engineers, Architects, Etc, Volume 2, part 2

Julius Ludwig Weisbach

Franklin Classics Trade Press

Theoretical Mechanics: With An Introduction To The Calculus

This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.
This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.
Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.
We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Theoretical Mechanics: With an Introduction to the Calculus

Mechanics of Engineering and of Machinery

History

RareBooksClub.com

A Manual of the Mechanics of Engineering and of the Construction of Machines Volume 2, PT. 2, ; With an Introduction to the Calculus. Designed as a ... and for the Use of Engineers, Architects, Etc

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. 1883 Excerpt: ...is very troublesome in the shafts of centrifugal machines, which with their extraordinary velocity (about 1,000 revolutions per minute) soon begin to run unsteadily, and as this evil is increased by the high speed, serious accidents sometimes result. In this respect the use of a double mechanism, such as is shown in Fig. 167, may be regarded as a decided improvement. Here two flat disks A and A'are placed upon two shafts CD and CD ' which run with equal velocity but in opposite directions. The flat disks are pressed against See Zeitschrift deutsch. Ing. 1874, p. 531. the disk E so that the shaft G F is subjected to no lateral pressure whatever. The belt pulleys H and H' are of course driven by means of a crossed and an open belt. In order to effect the transmission of great forces by friction wheels, without employing too great a pressure, the arrangement shown in Fig. 168 may be employed, an end Fio. 167. Fio. i63. view DAD being given of one wheel and a section through the rim BAB of the other. Here the surfaces of the wheels consist of a number of V grooves so arranged that the projections on one wheel enter the grooves of the other. That this will cause an increase of friction is evident from the theory of the wedge, the force R which presses the wheels together being resolved into two components, the relation between R and N being given by: a representing the angle included between the sides of the groove. As in former examples (§11 and § 31), we determine the friction which resists the sliding of the surfaces of the wheels on each other to be: For this case, also, some text-books give F =?--; the remarks of § 31 are therefore here applicable. Fig. 170. Theoretically the number of grooves employed is immaterial, but practically several g...

A Manual of the Mechanics of Engineering and of the Construction of Machines Volume 3, PT. 1; Designed as a Text-Book for Technical Schools and Colleges, and for the Use of Engineers, Architects, Etc

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. 1848 Excerpt: ...by a directrix, Fig. 273, to describe its circular orbit, this directrix would act, by its rigidity, as a centripetal force, and opposed to the centrifugal force of the body. If, lastly, the revolving body be connected by a thread or by a rod with the centre of revolution, the elasticity of the rod will then be in equilibrium with the centrifugal force of the body, and thereby act as a centripetal force. Let G be the weight of the revolving body, therefore its mass G the radius of the circle in which it revolves = r, and the velocity of revolution = v; from the last § we have the centrifugal force:. /--"if z.r.'ca/u.U-r Jf-'f Cu&i x.tt /: r rrv.' ' 7--' '944 lbs. and the modulus of l = 7000. f; hence inches, and its radius threefold security # 2. From the earth's of a day T--24 h. le earth's equator is t were the length of ldbel7=2S9timee I the equator, there md the body would its centrifugal force lit of the moon, r its ifugal force of this n Mv2 Gv% n V2 G.,, n n o « P = = = 2.--.--, therefore also P: G = 2.--: r, r gr 2g r 2g i. e., the centrifugal force is to tfie weight of the body as double the height due to the velocity is to the radius of revolution. If the motion be uniform, which always, takes place if no other feee (tangential force) fana the centripetal,'act upon the body, the velocity v = c may be expressed by the time of revolution T, if we put c =-?--=-----, and hence we shall obtain for the centrifugal time T force: T ) r T gT Since 4J = 39,4784, and for the measure in feet-= 0,031, we g then have more conveniently for calculation p= 39,4784 1)224.Gr The number n of revolutions per minute is often given, and therego" fore T is replaced by, whence it follows: n P = 39'4784 n Mr = 0,010966 n2 Mr = 0,000331 n2 Gr. 3600' ...

Principles of the Mechanics of Machinery and Engineering Volume 1

A Manual of the Mechanics of Engineering and of the Construction of Machines Volume 2, PT. 2; Designed as a Text-Book for Technical Schools and Colleges, and for the Use of Engineers, Architects, Etc

See the best price to sell, buy, or rent books by Julius Ludwig Weisbach. BookScouter helps to compare book prices from 25+ online bookstores and 30+ buyback vendors with a single search.

Books by Julius Ludwig Weisbach