An elementary treatise on MechanicsMacmillan, 1863 - 374 páginas |
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Página v
... moment of a force , 31 ; moment of two or more forces equal to that of their resultant , 32—34 ; def . of a fulcrum , a lever , 35 ; principle of the lever , 36 ; condition of equilibrium of a system of forces in one plane , 38-40 ...
... moment of a force , 31 ; moment of two or more forces equal to that of their resultant , 32—34 ; def . of a fulcrum , a lever , 35 ; principle of the lever , 36 ; condition of equilibrium of a system of forces in one plane , 38-40 ...
Página vi
... moment of a force with respect to a plane , centre of mean position , centre of figure , 75 ; general remarks , 77 , 78 ; centre of gravity of a pyramid , 79 ; stable and unstable equilibrium , 80-84 ; centre of gravity of a circular ...
... moment of a force with respect to a plane , centre of mean position , centre of figure , 75 ; general remarks , 77 , 78 ; centre of gravity of a pyramid , 79 ; stable and unstable equilibrium , 80-84 ; centre of gravity of a circular ...
Página 29
... Moment of a Force . The product of a force into the perpendicular distance of its line of action from a given point is called the moment of the force with respect to the point , or the moment of the force about the point . If an axis be ...
... Moment of a Force . The product of a force into the perpendicular distance of its line of action from a given point is called the moment of the force with respect to the point , or the moment of the force about the point . If an axis be ...
Página 30
... moments geo- metrically by areas , and the moment of P about O would thus be represented by twice the triangle ABO : the unit of moment ( i.e. the product of a unit of force into a unit of distance ) being represented geometrically by a ...
... moments geo- metrically by areas , and the moment of P about O would thus be represented by twice the triangle ABO : the unit of moment ( i.e. the product of a unit of force into a unit of distance ) being represented geometrically by a ...
Página 31
... moments to be positive which tend to twist a body in a direction opposite to that of the hands of a watch , sum of moments of P and Q about O = 2AAOC - 2AABO = = parallelogram Cr - 2AABO S = parallelogram BC- parallelogram rD – 2 △ ABO ...
... moments to be positive which tend to twist a body in a direction opposite to that of the hands of a watch , sum of moments of P and Q about O = 2AAOC - 2AABO = = parallelogram Cr - 2AABO S = parallelogram BC- parallelogram rD – 2 △ ABO ...
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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...