Natural philosophy. Mechanics, Τόμος 1Murby, 1873 |
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Σελίδα 37
... radius by the chord , and dividing by the arc . 7. Of a quadrant . At the same distance from either radius as that of the semicircle is from its base . 8. Of the surface of a hemisphere . height . At the middle point of the 9. Of a ...
... radius by the chord , and dividing by the arc . 7. Of a quadrant . At the same distance from either radius as that of the semicircle is from its base . 8. Of the surface of a hemisphere . height . At the middle point of the 9. Of a ...
Σελίδα 58
... radius . The smaller cylinder is called the axle , and the larger the wheel . The Power is applied at the circumference of the wheel , and the Weight acts on the circumference of the axle . Round the cylinder is wrapped a rope , to ...
... radius . The smaller cylinder is called the axle , and the larger the wheel . The Power is applied at the circumference of the wheel , and the Weight acts on the circumference of the axle . Round the cylinder is wrapped a rope , to ...
Σελίδα 59
... radius of the wheel . The power acts at A , the extremity of the long arm A F ; and the weight acts at B , the extremity of the shorter arm B F. Conse- quently , P : W :: AF : BF . In other words , the is to the weight as the radius of ...
... radius of the wheel . The power acts at A , the extremity of the long arm A F ; and the weight acts at B , the extremity of the shorter arm B F. Conse- quently , P : W :: AF : BF . In other words , the is to the weight as the radius of ...
Σελίδα 62
... radius of the axle ( the effect of the rope being considered to act through its centre ) , diminishes the ratio between it and the radius of the wheel . In addition to these , the weight of the machine and friction have to be allowed ...
... radius of the axle ( the effect of the rope being considered to act through its centre ) , diminishes the ratio between it and the radius of the wheel . In addition to these , the weight of the machine and friction have to be allowed ...
Σελίδα 69
... radius of the barrel , will give the weight the crane is capable of raising . Fig . 51 . Example . - A force of 18 lbs . is applied to a winch , which is 8 inches long ; the pinion has 6 teeth , and the wheel 72 ; and the barrel is 6 ...
... radius of the barrel , will give the weight the crane is capable of raising . Fig . 51 . Example . - A force of 18 lbs . is applied to a winch , which is 8 inches long ; the pinion has 6 teeth , and the wheel 72 ; and the barrel is 6 ...
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 applied attached axis axle balance base block body called cause centre CHAPTER circle circular circumference continuous curve cylinder descend described diameter direction distance dividing double draw drawn earth effect efficiency equal equilibrium evident example exerted fall feet fixed foot force of gravity forces acting friction given greater half Hence horizontal impart inches inclined plane increases length lever lifted machine means mechanical miles motion movable move multiplied opposite parallel particle passing path pendulum perpendicular pitch placed position pounds pressure produce proportional pulley radius raise ratio remain represented resistance rest resultant rope round screw sheaves side single space square stone straight line supported suppose surface teeth third tion triangle turned uniform unit velocity vertical wedge weight wheel
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...