An elementary treatise on MechanicsMacmillan, 1863 - 374 σελίδες |
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Αποτελέσματα 1 - 5 από τα 76.
Σελίδα 29
... axis be drawn through the point at 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 ...
... axis be drawn through the point at 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 ...
Σελίδα 30
... axis through O perpendicular to the plane 0 ABO . Also since the area of the triangle ABO = AB . Op , it is obvious that mn = twice the number of units of area in the triangle ABO . We may then represent moments geo- metrically by areas ...
... axis through O perpendicular to the plane 0 ABO . Also since the area of the triangle ABO = AB . Op , it is obvious that mn = twice the number of units of area in the triangle ABO . We may then represent moments geo- metrically by areas ...
Σελίδα 50
... axis equals ACB ; also describe a circle round the triangle ABG . points of intersection of this ellipse and circle ( C and C ' ) will determine The the point C of the string , which B must coincide with the peg ; for the arcs AG , BG ...
... axis equals ACB ; also describe a circle round the triangle ABG . points of intersection of this ellipse and circle ( C and C ' ) will determine The the point C of the string , which B must coincide with the peg ; for the arcs AG , BG ...
Σελίδα 56
... axis turns within a hollow socket ( when there is simply a line in contact and not a finite area ) , the amount of friction is much less than would be given by the above laws ( i ) and ( ii ) , for the same amount of pressure . The fact ...
... axis turns within a hollow socket ( when there is simply a line in contact and not a finite area ) , the amount of friction is much less than would be given by the above laws ( i ) and ( ii ) , for the same amount of pressure . The fact ...
Σελίδα 62
... axes . If we multiply the three equations of ( ii ) successively by cos y , cos B , cos a , we get by virtue of the relation cosa + cos2 B + cos2y = 1 ; Xcos a + Y cos ẞ + Zcos y = R ............ ( iii ) , which expresses that the ...
... axes . If we multiply the three equations of ( ii ) successively by cos y , cos B , cos a , we get by virtue of the relation cosa + cos2 B + cos2y = 1 ; Xcos a + Y cos ẞ + Zcos y = R ............ ( iii ) , which expresses that the ...
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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...