Natural philosophy. Mechanics, Τόμος 1Murby, 1873 |
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Σελίδα 59
... teeth curved in the direction on which the rope is coiled round the cylinder . B is a bolt called a paul , movable on its centre , D , and by its weight falling between the teeth of the wheel A. 1 In the wheel and axle we have two ...
... teeth curved in the direction on which the rope is coiled round the cylinder . B is a bolt called a paul , movable on its centre , D , and by its weight falling between the teeth of the wheel A. 1 In the wheel and axle we have two ...
Σελίδα 60
J Alfred Skertchly. From the direction of the teeth , it is evident that the wheel can be moved round only in the direction of the arrow ; any tendency to revolve in the opposite direction being checked by the paul B falling between the ...
J Alfred Skertchly. From the direction of the teeth , it is evident that the wheel can be moved round only in the direction of the arrow ; any tendency to revolve in the opposite direction being checked by the paul B falling between the ...
Σελίδα 66
... teeth ; and those on the web of the axle are termed leaves ; and the axle itself is generally called a pinion.1 Several conditions must be fulfilled in each pair of wheels , to ensure their working together . The teeth of each wheel ...
... teeth ; and those on the web of the axle are termed leaves ; and the axle itself is generally called a pinion.1 Several conditions must be fulfilled in each pair of wheels , to ensure their working together . The teeth of each wheel ...
Σελίδα 67
... teeth in the wheels , equals the weight multiplied by the leaves in the pinions , when the machine is in equili- brium . The circle midway between the grooves and summits of the teeth , is called the pitch circle ; and the motion ...
... teeth in the wheels , equals the weight multiplied by the leaves in the pinions , when the machine is in equili- brium . The circle midway between the grooves and summits of the teeth , is called the pitch circle ; and the motion ...
Σελίδα 68
... teeth , it would be exactly eight times the diameter of the pinion ; but the teeth and leaves would not hunt . By cutting the wheel with 65 teeth , and supposing the leaf A to be first engaged with the tooth B , it will , after eight ...
... teeth , it would be exactly eight times the diameter of the pinion ; but the teeth and leaves would not hunt . By cutting the wheel with 65 teeth , and supposing the leaf A to be first engaged with the tooth B , it will , after eight ...
Άλλες εκδόσεις - Προβολή όλων
Natural Philosophy: Part 1, Mechanics (1873) J. Alfred Skertchly Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2008 |
Συχνά εμφανιζόμενοι όροι και φράσεις
acceleration angle of repose attached axis beam body moves called central force centre of gravity centrifugal force circle circumference continuous circular motion curve cylinder descend diameter direction distance earth effect equal equilibrium exerted falling body feet per second fixed point foot-pounds force of gravity forces acting friction fulcrum Hence horizontal impact inches inclined plane isochronous kinetic energy length lever lifted machine mechanical efficiency miles per hr movable block multiplied number of seconds number of units oscillation parabola parallel forces parallelogram particle passive force path perpendicular pitch position pounds pounds weight pressure produce projectile proportional pulley radii radius raise ratio rectilinear motion represent resistance rest resultant revolution revolve rope passing round screw sheave simple pendulums space square stone surface suspended teeth tons triangle upper block velocity vertical vibrate wedge wheel and axle
Δημοφιλή αποσπάσματα
Σελίδα 41 - Newton's Three Laws of Motion," and are as follows: (1) All bodies continue in a state of rest, or of uniform motion in a straight line, unless acted upon by some external force that compels a change.
Σελίδα 15 - To find the area of a trapezoid. RULE. Multiply half the sum of the two parallel sides "by the perpendicular distance between them : the product will be the area.
Σελίδα 87 - This proportion teaches us that, when in equilibrium, the power is to the weight as the height of the plane is to its length.
Σελίδα 41 - First. A body in motion, and not acted upon by any external force, will move with a uniform velocity in a straight line.
Σελίδα 59 - There is an equilibrium upon the wheel and axle when the power is to the weight as the radius of the axle to the radius of the wheel.
Σελίδα 48 - Hence it is evident, that in every species of lever there will be an equilibrium, when the power is to the weight as the distance of the weight from the fulcrum is to the distance of the power from the fulcrum.
Σελίδα 32 - The perpendicular distance between the lines of action of the two forces is called the arm, and the product of one of the forces and the arm is called the moment of the couple.
Σελίδα 134 - The force is proportional to the square of the velocity and inversely proportional to the radius of turn during radial acceleration.
Σελίδα 46 - These machines are ; 1. the lever; 2. the wheel and axle ; 3. the pulley ; 4. the inclined plane ; 5. the wedge ; and 6. the screw.
Σελίδα 28 - If three forces, acting at a point, be represented in magnitude and direction by the sides of a triangle taken in order, they will be in equilibrium...