Manual of mechanics, by J.A. Galbraith and S. Haughton |
Expressions et termes fréquents
ball body falling centre of gravity centrifugal force circle described circumference components constant force cord cos² cubic foot cubic inch denote distance Dynamical force earth effect equation equilibrate equilibrium EXAMPLES expressed falling body feet per second Find the space Find the velocity fixed point force of gravity forces acting forces OA friction fulcrum heavy body Hence horizontal plane inclined plane interval inversely latitude law of motion lever machine maximum range miles per hour multiplied Oblique parallel forces parallelogram passing perfectly elastic perpendicular Power and Resistance power is applied pressure produce a velocity PROPOSITION quantity of matter radius rection represent resultant right angles screw seconds pendulum space described specific gravity square Statical force sustain threads tion tons triangle Twist velo velocity acquired velocity of projection vertical wheel and axle yards
Fréquemment cités
Page 4 - If a moving point possess simultaneously velocities which are represented in magnitude and direction by the two sides of a parallelogram drawn from a point, they are equivalent to a velocity which is represented in magnitude and direction by the diagonal of the parallelogram passing through the point.
Page 34 - The resultant of two forces acting at right angles is double the lesser of the components ; find the angles it makes with the components. 3. A body is supported on a smooth inclined plane by a force parallel to the plane. Show that the power is to the resistance as the height of the plane is to its length. 4. A uniform bar 4 ft.
Page 7 - The moment of a force, with respect to a point, is the product of the force into the perpendicular let fall from the point to the line of direction of the force.
Page 21 - Center of resistance is the point of application of the resultant of all the forces of the passive drift acting against the different parts of an aeroplane.
Page 40 - A force may be transmitted from one point to another by means of a cord, and if there were no friction, this force might be transmitted undiminished in any direction.
Page 16 - ... 6. If a cone be immersed in any fluid so as to be just covered, show that the total pressure upon the conical surface, when the vertex is upwards, is twice as great as when the vertex is downwards. 7. Two cords, bearing equal weights P, P, and passing over two pulleys A, B, which lie in the same horizontal line, at a distance from each other equal to 2a, are attached at a point C to a weight W, what in the position of equilibrium is the distance of C below the horizontal line through A and B...
Page 93 - The force is proportional to the square of the velocity and inversely proportional to the radius of turn during radial acceleration.
Page 101 - ABCD is equal to that which would be acquired in falling down the same perpendicular altitude A T.
Page 36 - Ibs. into a cart 3 feet high, by means of a plank 14 feet long resting against the cart ? Ans. The force must exceed 206 Ibs.
Page 64 - I. Corpus omne perseverare in statu suo quiescendi vel movendi uniformiter in directum, nisi quatenus a viribus impressis cogitur statum ilium mutare.