An elementary treatise on MechanicsMacmillan, 1863 - 374 σελίδες |
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Σελίδα 46
... figure are of known length . T : T ' : W = sin ß : sin a : sin ( a + ß ) ; Then , .. T = W. sin B sin ( a + B ) ' T = W sin a sin ( a + B ) 47. II . Two spheres are supported by strings attached 46 OF FORCES ACTING IN ONE PLANE .
... figure are of known length . T : T ' : W = sin ß : sin a : sin ( a + ß ) ; Then , .. T = W. sin B sin ( a + B ) ' T = W sin a sin ( a + B ) 47. II . Two spheres are supported by strings attached 46 OF FORCES ACTING IN ONE PLANE .
Σελίδα 47
... spheres , T , T ' the tensions of the two strings , W , W ' the weights of the spheres which may be supposed to act through their centres . T " T Then in considering the equilibrium of A , there are three forces acting on it , viz . the ...
... spheres , T , T ' the tensions of the two strings , W , W ' the weights of the spheres which may be supposed to act through their centres . T " T Then in considering the equilibrium of A , there are three forces acting on it , viz . the ...
Σελίδα 73
... sphere ( which is very nearly the case ) , the vertical lines would all converge to the centre , and therefore the directions of the forces which the earth exerts on the different particles composing a body are not parallel , strictly ...
... sphere ( which is very nearly the case ) , the vertical lines would all converge to the centre , and therefore the directions of the forces which the earth exerts on the different particles composing a body are not parallel , strictly ...
Σελίδα 89
... sphere , or a spherical surface , or sphe- rical shell , is the centre of the sphere . These results will be of frequent use . 79. To find the centre of gravity of a pyramid on triangular base . Let ABC be the base of the pyramid , and ...
... sphere , or a spherical surface , or sphe- rical shell , is the centre of the sphere . These results will be of frequent use . 79. To find the centre of gravity of a pyramid on triangular base . Let ABC be the base of the pyramid , and ...
Σελίδα 95
... sphere resting on a horizontal table . Or again , the forces in the new position may tend to make the body neither return to its former position nor recede from it , but to give it a rocking or rolling motion ; as in the case of an ...
... sphere resting on a horizontal table . Or again , the forces in the new position may tend to make the body neither return to its former position nor recede from it , but to give it a rocking or rolling motion ; as in the case of an ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
accelerating force angular points applied axis balance ball bisects body or system centre of gravity circle coefficient of friction conditions of equilibrium cos² curve cycloid cylinder determine diagonal distance elastic equal particles equation equi find the centre fixed point forces acting fulcrum funicular geometrical given heavy particles Hence horizontal plane impact inclined plane latus rectum length lever librium magnitude and direction mass middle point moving parabola parallel parallelogram parallelogram of forces parallelopiped Pcos perpendicular polygon position of equilibrium pressure pully pyramid radius represented resolved rest resultant right angles rough shew sides similar triangles sin² sliding smooth sphere straight line string passes student suppose surface system of forces system of particles tangent tension theorem three forces tion triangle uniform vertex vertical plane virtual velocity W's virtual weight
Δημοφιλή αποσπάσματα
Σελίδα 15 - If two forces acting at a point be represented in magnitude and direction by the...