Mechanics, Theoretical, Applied, and ExperimentalLongmans, Green, and Company, 1909 - 381 pages |
Autres éditions - Tout afficher
Mechanics, Theoretical, Applied, and Experimental William Wade Fitzherbert Pullen Affichage du livre entier - 1909 |
Mechanics, Theoretical, Applied, and Experimental William Wade Fitzherbert Pullen Affichage du livre entier - 1902 |
Mechanics, Theoretical, Applied, and Experimental William Wade Fitzherbert Pullen Aucun aperçu disponible - 2016 |
Expressions et termes fréquents
angle axle balance beam belt body Calculate centre of gravity coefficient of friction component constant cord cubic foot curve cylinder density diagram diameter direction distance moved draw a line driving force elastic elastic limit equal equation experiment feet forces acting ft.-lbs given grms hence hinge horizontal horse-power hydrometer law of equilibrium leading screw length lever lifting line parallel liquid load machine mass moved measured mechanical advantage mechanical efficiency miles per hour motion perpendicular piston plane Plot position pull pulley pump represent resistance of friction revolutions per minute rope round scale screw secs shaft shown in Fig side slider slope solid speed spindle spring spring-balance square inch straight line stress supporting force surface teeth tension thread tons triangle V₁ velocity ratio vernier vertical volume W₁ weight wheel wire Young's modulus zero
Fréquemment cités
Page 74 - ... with the vertical. It is lowered by means of two ropes passing under the barrel, one end of each rope being fixed, while two men pay out the other ends of the ropes. What pull in Ibs. must each man exert in order that the barrel may be supported at any point J (S.
Page 202 - Every body continues in its state of rest, or uniform motion in a straight line, unless it is compelled to change that state by forces impressed on it (inertia).
Page 2 - Thus when it is said that the sum of the three angles of any triangle is equal to two right angles, this is a theorem, the truth of which is demonstrated by Geometry.
Page 203 - Reaction of the resistance be measured by the velocities of its several parts and their several amounts conjointly, whether these arise from friction, cohesion, weight, or acceleration ; — Action and Reaction, in all combinations of machines, will be equal and opposite.
Page 244 - Refer to the figures in Lecture XVI. of the foot-driving gear for the screw-cutting lathe, before answering this question.] 14. When an ordinary train of wheels is employed for obtaining an Increased speed of rotation, how are the wheels arranged? Sketch an arrangement of four pulleys with bands for driving a fan at 1500 revolutions per minute from a shaft making 100 revolutions per minute. (S. and A. Exam. 1893.) 15.
Page 281 - What must be the width of the belt so that its greatest tension shall be 70 Ibs. per inch of width, it being assumed that the tension in the driving side is twice that in the slack side ? (Take ir = 3}.) Ans.
Page 185 - When the body had been lifted x ft. from its position of rest, the pulling force was automatically recorded as follows : Find approximately the work done on the body when it has risen 70 ft.
Page 113 - In a wharf crane the post, tie-rod, and jib measure 15, 20, and 30 feet respectively, what would be the nature and amount of the stresses in each of the three members when a load of 7 tons is suspended over the pulley at the jib head...
Page 113 - A sheer-legs is formed of two sheer-poles BC, DC, each 25 feet in length, and secured to a base-plate in the ground at B and D. The wire guy or tension rope AC is attached to the ground at a point A, which is 60 feet distant from B D.
Page 113 - A uniform beam 12 ft. long and weighing 56 Ibs. rests on and is fastened to two props 5 ft. apart, one of which is 3 ft. from one end of the beam. A load of 35 Ibs. is placed (a) on the middle of the beam, (b) at the end nearest a prop, (c) at the end farthest from a prop : calculate the weight each prop has to bear in each Case.