Elements of Natural Philosophy, Volume 1 |
From inside the book
Results 1-5 of 86
Page 4
... Hence , when P moves through any space in the direction of the cord , the pulley B moves in the same direction , through half the space . ( 2 ) If there be two cords and two pulleys , the ends AA ' being fixed , and the other end of AB ...
... Hence , when P moves through any space in the direction of the cord , the pulley B moves in the same direction , through half the space . ( 2 ) If there be two cords and two pulleys , the ends AA ' being fixed , and the other end of AB ...
Page 8
... Hence the resultant of any two velocities as OA , AC , in the figure , is a velocity represented by the third side , OC , of the triangle ОАС . Hence if a point have , at the same time , velocities represented by OA , AC , and CO , the ...
... Hence the resultant of any two velocities as OA , AC , in the figure , is a velocity represented by the third side , OC , of the triangle ОАС . Hence if a point have , at the same time , velocities represented by OA , AC , and CO , the ...
Page 9
... Hence if v be the change in the velocity during the interval t , v === vat , or a = ·ピ 33. Acceleration is variable when the point's velocity does not receive equal increments in successive equal periods of time . It is then measured ...
... Hence if v be the change in the velocity during the interval t , v === vat , or a = ·ピ 33. Acceleration is variable when the point's velocity does not receive equal increments in successive equal periods of time . It is then measured ...
Page 10
... Hence the velocity of P is to that of A as OP to CA , i.e. as V to R ; and is therefore equal to V R V or V2 R ' and this ( § 35 ) is the amount of the acceleration in the circular path ABD . 37. The whole acceleration in any direction ...
... Hence the velocity of P is to that of A as OP to CA , i.e. as V to R ; and is therefore equal to V R V or V2 R ' and this ( § 35 ) is the amount of the acceleration in the circular path ABD . 37. The whole acceleration in any direction ...
Page 12
... Hence , if AP be the direction of motion at A , AB the direction of acceleration , and the position of the point at time t ; draw QP parallel to BA , meeting AP in P : then = AP Q 0 Hence Vt , PQ = { at2 . 2 V2 AP2 = -PQ . α This is a ...
... Hence , if AP be the direction of motion at A , AB the direction of acceleration , and the position of the point at time t ; draw QP parallel to BA , meeting AP in P : then = AP Q 0 Hence Vt , PQ = { at2 . 2 V2 AP2 = -PQ . α This is a ...
Other editions - View all
Common terms and phrases
acceleration action amount angular velocity anticlastic attraction axis called centimetre centre of gravity centre of inertia circle circular cloth co-ordinates component configuration consider constant cosine couple curvature curve cylinder denote density described diagram displacement distance elements ellipse ellipsoid elongation equal equations equilibrium external point Extra fcap finite flexure fluid forces acting friction geometrical given force Hence hodograph horizontal infinitely small instant inversely kinetic energy length magnitude mass matter measured moment of inertia momentum moving Natural Philosophy normal section Oxford P₁ parallel particle path pendulum perpendicular portion position potential pressure principal axes principle produce projection proportional quantity radius radius of gyration reckoned rectangular resultant right angles rigid body rotation round shear shell sides simple harmonic motion solid angle space spherical surface spiral square straight line strain stress suppose tangent theory tion torsion uniform unit vertical whole wire
Popular passages
Page 161 - that every particle of matter in the universe attracts every other particle, with a force whose direction is that of the line joining the two, and whose magnitude is directly as the product of their masses, and inversely as the square of their distances from each other.
Page 65 - Every body continues in its state of rest or of uniform motion in a straight line, except in so far as it is compelled by force to change that state.
Page 28 - Fourier's theorem is not only one of the most beautiful results of modern analysis, but may be said to furnish an indispensable instrument in the treatment of nearly every recondite question in modern physics.
Page 161 - Newton generalized the law of attraction into a statement that every particle of matter in the universe attracts every other particle with a force which varies directly as the product of their masses and inversely as the square of the distance between them; and he thence deduced the law of attraction for spherical shells of constant density.
Page 66 - Change of motion is proportional to the impressed force and takes place in the direction of the straight line in which the force acts.
Page 68 - To every action there is always an equal and contrary reaction; or, the mutual actions of any two bodies are always equal and oppositely directed in the same straight line.
Page 130 - UNTIL we know thoroughly the nature of matter and the forces which produce its motions, it will be utterly impossible to submit to mathematical reasoning the exact conditions of any physical question.