An elementary treatise on MechanicsMacmillan, 1863 - 374 páginas |
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Página 4
... weight is given to the force which the earth's attraction causes a body at rest to exert downwards . The term ... weight of the body , and is equal to it . If a body be suspended freely by a string , the tension of the string , which is ...
... weight is given to the force which the earth's attraction causes a body at rest to exert downwards . The term ... weight of the body , and is equal to it . If a body be suspended freely by a string , the tension of the string , which is ...
Página 5
... weights of different sub- stances occupy different volumes . We are thus led to con- sider a quality of matter to ... weight are so : -and as in these cases , so in that of mass , our principal business must be to establish some mode ...
... weights of different sub- stances occupy different volumes . We are thus led to con- sider a quality of matter to ... weight are so : -and as in these cases , so in that of mass , our principal business must be to establish some mode ...
Página 6
... weight of a given body for instance ) , PF will represent a force the intensity of which is P times that of the unit : or we may speak of a force P simply , in the same sense , —the unit of force being understood . 9. We have seen that ...
... weight of a given body for instance ) , PF will represent a force the intensity of which is P times that of the unit : or we may speak of a force P simply , in the same sense , —the unit of force being understood . 9. We have seen that ...
Página 7
Stephen Parkinson. or weight of the same body is invariable ; so that weight affords a very useful means of estimating all statical forces . The tension of a string may be measured by the weight ( the number of pounds if we please ) ...
Stephen Parkinson. or weight of the same body is invariable ; so that weight affords a very useful means of estimating all statical forces . The tension of a string may be measured by the weight ( the number of pounds if we please ) ...
Página 10
... weight be supported by the hand by means of a string , the effort which the hand must exert will be the same whatever be the length of the string ( the weight of the string being neglected ) , i . e . whether the force , which the hand ...
... weight be supported by the hand by means of a string , the effort which the hand must exert will be the same whatever be the length of the string ( the weight of the string being neglected ) , i . e . whether the force , which the hand ...
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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...