An elementary treatise on MechanicsMacmillan, 1863 - 374 σελίδες |
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Αποτελέσματα 1 - 5 από τα 40.
Σελίδα 5
... subject again . For the present , if necessary , the student may assume that the masses of bodies are proportional to their weights at the same place on the earth's surface . 8. Method of estimating and comparing forces . When a MASS . 5.
... subject again . For the present , if necessary , the student may assume that the masses of bodies are proportional to their weights at the same place on the earth's surface . 8. Method of estimating and comparing forces . When a MASS . 5.
Σελίδα 20
... proportional to the forces . Let P , Q , R be three such forces acting at any point A , and let AB , AD , represent P , Q , then will the diagonal CA of the parallelogram BD represent R. And if A'B'C ' be any triangle whose sides are ...
... proportional to the forces . Let P , Q , R be three such forces acting at any point A , and let AB , AD , represent P , Q , then will the diagonal CA of the parallelogram BD represent R. And if A'B'C ' be any triangle whose sides are ...
Σελίδα 21
... proportional to the sine of the angle between the directions of the other two , either the three forces are in equilibrium , or they have a resultant double of some one of the forces . 25. We may now give a theorem which is an extension ...
... proportional to the sine of the angle between the directions of the other two , either the three forces are in equilibrium , or they have a resultant double of some one of the forces . 25. We may now give a theorem which is an extension ...
Σελίδα 27
... proportional to S , P , R ,, and in the triangle BCO the sides are proportional to S ' , Q , R. Hence P ос S ' and S AC ' Q = TWO PARALLEL FORCES . 27 27.
... proportional to S , P , R ,, and in the triangle BCO the sides are proportional to S ' , Q , R. Hence P ос S ' and S AC ' Q = TWO PARALLEL FORCES . 27 27.
Σελίδα 28
... into segments which are inversely proportional to the forces . ( i ) and ( ii ) determine the resultant completely . 30. If the two forces act in opposite directions the method is very similar : the point C lies outside AB ; and RP - Q ...
... into segments which are inversely proportional to the forces . ( i ) and ( ii ) determine the resultant completely . 30. If the two forces act in opposite directions the method is very similar : the point C lies outside AB ; and RP - Q ...
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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...