Elementary Introduction to Practical Mechanics: Illustrated by Numerous ExamplesLongmans, 1870 - 324 pages |
From inside the book
Results 6-10 of 81
Page 41
... round the cylin- der , is pulled in the direction MN , causing the cylinder to turn from left to right and winding up the spring . On the down stroke the string tends to slacken , the spring uncoils and turns KL back from right to left ...
... round the cylin- der , is pulled in the direction MN , causing the cylinder to turn from left to right and winding up the spring . On the down stroke the string tends to slacken , the spring uncoils and turns KL back from right to left ...
Page 45
... drum of the winding machine to have two ropes wound round it in contrary directions , so that it unwinds one rope while winding up the other , and that consequently an empty box descends while a full one is being raised RAISING WEIGHTS .
... drum of the winding machine to have two ropes wound round it in contrary directions , so that it unwinds one rope while winding up the other , and that consequently an empty box descends while a full one is being raised RAISING WEIGHTS .
Page 52
... round which these forces balance , and the pressure on that point . Ans . ( 1 ) 2 ft . ( 2 ) 20 lbs . Ex . 169. Let AB be a rod 12 ft . long ( whose weight is neglected ) , from a a weight of 20 lbs . is hung , and an unknown weight ( P ) ...
... round which these forces balance , and the pressure on that point . Ans . ( 1 ) 2 ft . ( 2 ) 20 lbs . Ex . 169. Let AB be a rod 12 ft . long ( whose weight is neglected ) , from a a weight of 20 lbs . is hung , and an unknown weight ( P ) ...
Page 54
... round through a right angle in such a manner that the middle point of the upper block is exactly over a point in the axis of the lower , and the end of the lower in the same plane with one face of the latter , determine the pressures on ...
... round through a right angle in such a manner that the middle point of the upper block is exactly over a point in the axis of the lower , and the end of the lower in the same plane with one face of the latter , determine the pressures on ...
Page 59
... round A. Ans . 1050 lbs . [ Find & the centre of gravity of ABCD , and through it draw the vertical line EF meeting DC in E , the weight will act along the line EF , and the resultant of P and w must pass through a since the body is on ...
... round A. Ans . 1050 lbs . [ Find & the centre of gravity of ABCD , and through it draw the vertical line EF meeting DC in E , the weight will act along the line EF , and the resultant of P and w must pass through a since the body is on ...
Common terms and phrases
ABCD angle of resistance angular angular velocity axis axle beam body brickwork cast iron centre of gravity circle circumference coefficient of friction Crown 8vo cubic foot curve cylinder described determine the number diameter direction distance draw Edition engine epicycloid equal equation equilibrium expended extrados forces acting formula friction frustum given hence horizontal horse-power inclined inclined plane last Example length limiting angle magnitude mass middle point minute modulus moment of inertia motion moving number of units oscillation P₁ parallel forces passing perpendicular plane pressure principle principle of moments Prop pulley R₁ radius raised reaction represent respectively rest resultant right angles rope round screw sliding space square inch steam suppose surface teeth thick thread tion triangle vertical vols wall weight wheel Woodcuts wrought iron
Popular passages
Page 11 - BIBLE ANIMALS ; being a Description of every Living Creature mentioned in the Scriptures, from the Ape to the Coral.
Page 16 - Useful Information for Engineers. By the same Author. FIRST, SECOND, and THIRD SERIES, with many Plates and Woodcuts. 3 vols. crown 8vo. 10s. 6<f. each. The Application of Cast and "Wrought Iron to Building Purposes. By the same Author.
Page 22 - Visits to Remarkable Places : Old Halls, Battle-Fields, and Scenes illustrative of Striking Passages in English History and Poetry. By WILLIAM HOWITT. 2 vols. square crown 8vo. with Wood Engravings, 25s.
Page 21 - The ALPINE GUIDE. By JOHN BALL, MRIA late President of the Alpine Club. Thoroughly Revised Editions, in Three Volumes, post Svo. with Maps and other Illustrations:— GUIDE to the WESTERN ALPS, including Mont Blanc, Monte Rosa, Zermatt, &c.
Page 7 - SYDNEY SMITH'S MISCELLANEOUS WORKS; including his Contributions to the Edinburgh Review. Crown 8vo. 6s. The WIT and WISDOM of the Rev. SYDNEY SMITH ; a Selection of the most memorable Passages in his Writings and Conversation.
Page 25 - Sea-Fisherman: comprising the Chief Methods of Hook and Line Fishing in the British and other Seas, a glance at Nets, and remarks on Boats and Boating. Second Edition, enlarged, with 80 Woodcuts.
Page 2 - The Seventh Great Oriental Monarchy ; or, a History of the Sassanians : with Notices Geographical and Antiquarian. By Geo. Rawlinson, MA With Map and 95 Illustrations. 8vo. 28s. Encyclopedia of Chronology, Historical and Biographical; comprising the Dates of all the Great Events of History, including Treaties, Alliances, Wars, Battles, &c.
Page 21 - History of Discovery in our Australasian Colonies, Australia, Tasmania, and New Zealand, from the Earliest Date to the Present Day. By WILLIAM HOWITT. With 3 Maps of the Recent Explorations from Official Sources. 2 vols. 8vo. 20s. The Capital of the Tycoon ; a Narrative of a 3 Years
Page 16 - PRACTICAL TREATISE on METALLURGY, adapted from the last German Edition of Professor KERL'S Metallurgy by W.
Page 21 - Either of the Three Volumes or Parts of the Alpine Guide may be had with this INTRODUCTION prefixed, price Is.