id author title date pages extension mime words sentences flesch summary cache txt 42473 Various Encyclopaedia Britannica, 11th Edition, "Matter" to "Mecklenburg" Volume 17, Slice 8 .txt text/plain 197933 12299 71 vanishes, the given system of forces is said to be in _equilibrium_--i.e. the particle could remain permanently at rest under its action. the forces on any line or in the sum of their moments about any point. resultant acts through a definite point, or _centre of parallel forces_, If we imagine a rigid body to be acted on at given points by forces of point P at time t from a fixed origin O on the line of motion, this the line of motion with a force varying as the distance from that point. time is equal to the work done by the extraneous forces acting on the an axis through the mass-centre, or through a fixed point O, a number solid free to turn about a fixed point in a given field of force, it direction of the forces and the possible motions of their points of ./cache/42473.txt ./txt/42473.txt