A Text-book of Applied Mechanics and Mechanical Engineering, Volume 1C. Griffin & Company, 1903 - Mechanics, Applied |
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A Text-book of Applied Mechanics and Mechanical Engineering ..; 2 Andrew 1849-1912 Jamieson No preview available - 2021 |
A Text-book of Applied Mechanics and Mechanical Engineering ..; 2 Andrew 1849-1912 Jamieson No preview available - 2021 |
Common terms and phrases
ADDENDUM CIRCLE angle angular velocity Applied Mechanics arcs of approach axis axle ball bearings base circle bearing bevel wheels brake centre coefficient of friction cone crane curves cwts cycloidal cylinder d₁ d₂ Describe diagram diameter direction displacement driving drum dynamometer efficiency electric engine epicycloid equal equation feet per minute figure force frictional resistance ft.-lbs gearing grooves Hence horizontal horse-power hydraulic hypocycloid inclined plane involute lathe leading screw leather Lecture length lever lifting load lubrication machine mechanical advantage motion motor number of teeth P₁ pair of teeth parallel pinion pitch circle pivot plane pressure Principle of Moments pulley R₁ R₂ rack radius revolutions per minute rotation screw shaft shown side Sketch speed spur wheel square inch steam stress surface tension tons tooth transmitted velocity-ratio vertical W₁ W₂ weight
Popular passages
Page 312 - The cycloid is a curve generated by a point on the circumference of a circle which rolls on a straight line tangent to the circle.
Page 310 - A cycloid is a curve traced out by a point on the circumference of a circle which rolls along a straight line. The form of this curve will be understood from the accompanying figure.
Page 304 - The pitch of the teeth is the distance from the centre of one tooth to the centre of the next tooth, measured along the pitch line.
Page 35 - It is, in fact, •what we have already denned as the Moment of the Couple. Hence, we see that the moment of a couple about any point in its plane, is independent of the position of that point with respect to the couple. Remembering, then, that a couple has no translatory effect on the body on which it acts, and that its rotatory effect is measured by its moment, we at once obtain the following corollaries from the above Proposition : — (1) A Couple may be considered as acting anywhere in its own...
Page 488 - GENERAL INSTRUCTIONS. — If the rules are not attended to the paper will be cancelled. — You may take the Elementary, or the Advanced, or the Honours paper, but you must confine yourself to one of them.
Page 51 - Energy (E) is defined in physics as the ability to do work. The principle of the conservation of energy states that energy can be neither created nor destroyed in the universe, but it may be converted from one form to another, including the energy equivalent of rest-mass. Matter may have (a) kinetic energy, when it is moving and exerts a force on other matter; (b) potential energy, because of its position...
Page 75 - The saddle of a lathe weighs 5 cwts., and it is moved along the bed of the lathe by a rack and pinion arrangement. What force, applied at the end of a handle 10 inches in length, will be just capable of moving the saddle, supposing the pinion to have 12 teeth of Ij-inch pitch, and the coefficient of friction between the saddle and lathe-bed to be O'l, other friction being neglected?
Page 6 - = W x B C. Here, again, BC is the length of the projection of AB on the direction or line of action of the resistance, W. Hence, we have the following statement, which is often useful : — The work done by a force is equal to the product of the force into the length of the projection of the displacement on the line of action or direction of the force. EXAMPLE II. — A body is dragged along a floor by means of a cord which makes a constant angle of 30° with the floor.
Page 4 - Foot-pound (ft.-lb.), is the work done when a force of one pound acts through a distance of one foot along its line of action.
Page 4 - The work done by a force is measured by the product of the force into the distance through which that force moves in its own direction.