The elements of mechanics; including hydrostaticsJohn Murray, 1879 - 352 σελίδες |
Συχνά εμφανιζόμενοι όροι και φράσεις
acceleration algebraic sum angle of repose atmospheric axis ball beam body moves centre of gravity centre of pressure circle coefficient of friction components consequently cord cos² couple cylinder density depth determine diagonal displaced displaced fluid distance elastic force equal and opposite equation equilibrium feet find the centre fluid forces acting fulcrum given point h₂ Hence horizontal plane immersed impact inclined plane indefinitely small latus rectum length lever magnitude and direction mechanical advantage motion number of forces P₁ P₂ parallel forces parallelogram particle perpendicular piston plate position of equilibrium Post 8vo preceding pulley radius rest right angles rigid body screw sides smooth space described specific gravity square surface tangent tension three forces triangle valve velocity of projection vertex vertical line vessel virtual velocities W₂ weight
Δημοφιλή αποσπάσματα
Σελίδα 16 - If any number of forces, acting at a point, can be represented in magnitude and direction by the sides of a polygon taken in order, they will be in equilibrium.
Σελίδα 12 - If three forces, represented in magnitude and direction by the sides of a triangle, act on a point, they will keep it at rest.
Σελίδα 4 - As the body on , which the forces act is in equilibrium, the supporting force / ' must be equal in magnitude and opposite in direction to the resultant of the loads L.
Σελίδα 215 - ... altitude equal to the depth of the centre of gravity of the surface below the surface of the fluid.
Σελίδα 29 - Prove that the algebraic sum of the moments of two concurrent forces about any point in their plane is equal to the moment of their resultant about the same point.