An elementary treatise on MechanicsMacmillan, 1863 - 374 páginas |
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Página 26
... perpendicular to it , the algebraic sum of the former resolved parts will be = R , and of the latter will be = 0 . COR . 2. If such a system of forces as is considered in this Article is in equilibrium , the resultant must be zero ...
... perpendicular to it , the algebraic sum of the former resolved parts will be = R , and of the latter will be = 0 . COR . 2. If such a system of forces as is considered in this Article is in equilibrium , the resultant must be zero ...
Página 29
... perpendicular to the line into the perpendicular distance between the line and the line of action of the force . This perpendicular dis- tance is the shortest distance between the two lines . -- The student will be careful to observe ...
... perpendicular to the line into the perpendicular distance between the line and the line of action of the force . This perpendicular dis- tance is the shortest distance between the two lines . -- The student will be careful to observe ...
Página 30
Stephen Parkinson. Op perpendicular to AB , and if m , n be the number of linear units in AB , Op respectively , then will mn be the moment of P about O , or about an axis through O perpendicular to the plane 0 ABO . Also since the area ...
Stephen Parkinson. Op perpendicular to AB , and if m , n be the number of linear units in AB , Op respectively , then will mn be the moment of P about O , or about an axis through O perpendicular to the plane 0 ABO . Also since the area ...
Página 33
... perpendicular to this plane , -their directions meeting it in the points R , P , Q. Draw Pp , Rr , Qq per- P R pendicular to Opq - then if the line Opq is parallel to PQ , these perpendiculars are equal , and — since R = P + Q — the ...
... perpendicular to this plane , -their directions meeting it in the points R , P , Q. Draw Pp , Rr , Qq per- P R pendicular to Opq - then if the line Opq is parallel to PQ , these perpendiculars are equal , and — since R = P + Q — the ...
Página 42
... perpendicular to OR t cos pOR = t ' cos q OR ; but qOR = pOR , ..t = t ' ; i.e. the tension at successive elementary distances is the same , and therefore it is so at finite distances . Hence if the string be pulled by forces T , T " at ...
... perpendicular to OR t cos pOR = t ' cos q OR ; but qOR = pOR , ..t = t ' ; i.e. the tension at successive elementary distances is the same , and therefore it is so at finite distances . Hence if the string be pulled by forces T , T " at ...
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Términos y frases comunes
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
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Página 15 - If two forces acting at a point be represented in magnitude and direction by the...