An elementary treatise on MechanicsMacmillan, 1863 - 374 σελίδες |
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Αποτελέσματα 1 - 5 από τα 52.
Σελίδα 25
... right angles to each other in the plane of the forces , and let the directions of P , P ' , ... make an- gles a , a , ... with Ax . Then since P , P ' , ... are equiva- lent to Pcos a in direction of Ax , and Psina in direction of Ay ...
... right angles to each other in the plane of the forces , and let the directions of P , P ' , ... make an- gles a , a , ... with Ax . Then since P , P ' , ... are equiva- lent to Pcos a in direction of Ax , and Psina in direction of Ay ...
Σελίδα 26
... angle with Ax , we must have R cos 0 = ( P cos a ) , R sin 0 = ( P sin a ) . Whence R = { ( P cos a ) } + { Σ ( Psin a ) ... right angles to each other must be severally zero . 29. To find the resultant of two forces whose directions are ...
... angle with Ax , we must have R cos 0 = ( P cos a ) , R sin 0 = ( P sin a ) . Whence R = { ( P cos a ) } + { Σ ( Psin a ) ... right angles to each other must be severally zero . 29. To find the resultant of two forces whose directions are ...
Σελίδα 29
... right angles to the plane which contains the point and the direction of the force , this product is called the moment of the force about the axis . Further , The moment of a force about any line is defined to be the product of the ...
... right angles to the plane which contains the point and the direction of the force , this product is called the moment of the force about the axis . Further , The moment of a force about any line is defined to be the product of the ...
Σελίδα 32
... right angles to the directions of the forces ; then since the resultant of P , Q passes through C , P.AC - Q.BC , and . P. ac Q. bc ; = when the forces P , Q act in the same directions ( fig . 1 ) , we have YP a A la C B YR = PO sum of ...
... right angles to the directions of the forces ; then since the resultant of P , Q passes through C , P.AC - Q.BC , and . P. ac Q. bc ; = when the forces P , Q act in the same directions ( fig . 1 ) , we have YP a A la C B YR = PO sum of ...
Σελίδα 33
... right angles to their direction , is equal to the moment of their resultant about the same line . Let Opq be any line in the plane of the paper - and let R be the resultant of two parallel forces P , Q acting perpendicular to this plane ...
... right angles to their direction , is equal to the moment of their resultant about the same line . Let Opq be any line in the plane of the paper - and let R be the resultant of two parallel forces P , Q acting perpendicular to this plane ...
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...