Natural philosophy. Mechanics, Τόμος 1Murby, 1873 |
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Σελίδα vi
... Levers Mechanical Efficiency Omitted Resistances Differential Wheel and Axle , 61 • · 62 63 BARREGUEN NI Friction Wheels POWERS . Pulleys , or Drums Varieties 46 · Cog Wheels Description . Classification 1 ( a ) . The Lever ...
... Levers Mechanical Efficiency Omitted Resistances Differential Wheel and Axle , 61 • · 62 63 BARREGUEN NI Friction Wheels POWERS . Pulleys , or Drums Varieties 46 · Cog Wheels Description . Classification 1 ( a ) . The Lever ...
Σελίδα 34
... track . progressing towards the sun , her motion is accelerated ; 34 NATURAL PHILOSOPHY . Universal Gravity Terrestrial Gravity Relative, or Specific Gravity Compound Levers 54 Power 55 Universal Gravity Supported Bars 55.
... track . progressing towards the sun , her motion is accelerated ; 34 NATURAL PHILOSOPHY . Universal Gravity Terrestrial Gravity Relative, or Specific Gravity Compound Levers 54 Power 55 Universal Gravity Supported Bars 55.
Σελίδα 35
... falls , as we term it . The intensity of the force with which the earth attracts a body is called the weight of the body . The moon is prevented from flying off into space by STATICS . 35 Particular, or Terrestrial Gravity Angular Levers ...
... falls , as we term it . The intensity of the force with which the earth attracts a body is called the weight of the body . The moon is prevented from flying off into space by STATICS . 35 Particular, or Terrestrial Gravity Angular Levers ...
Σελίδα 36
... any body may be thus found . 1 Page 29 . Suspend the body by any point , A ( fig 36 NATURAL PHILOSOPHY . Parallelism of Gravity Mechanical Efficiency 56 Centre of Gravity Weight of Levers 57 Rules 57 Method of Finding Centre of Gravity.
... any body may be thus found . 1 Page 29 . Suspend the body by any point , A ( fig 36 NATURAL PHILOSOPHY . Parallelism of Gravity Mechanical Efficiency 56 Centre of Gravity Weight of Levers 57 Rules 57 Method of Finding Centre of Gravity.
Σελίδα 45
... levers as being perfectly rigid . These conditions are , of course , impossible ; neverthe- less , if they are assumed , it will be found to materially assist the student in understanding the relation between the power and weight of a ...
... levers as being perfectly rigid . These conditions are , of course , impossible ; neverthe- less , if they are assumed , it will be found to materially assist the student in understanding the relation between the power and weight of a ...
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...