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Flashcards by tatemae.honne, updated more than 1 year ago
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| Question | Answer |
| Moment of a force | Force x perpendicular distance to the fulcrum |
| Fulcrum | A fixed point about which a rigid body is free to rotate |
| Lever | A rigid body that is free to rotate about a fixed axis |
| Couple | A pair of equal and opposite forces whose lines of action do not coincide |
| Torque (of a couple) | Magnitude of one of the forces multiplied by the distance between them |
| Equilibrium | When a body is neither accelerating nor changing its rate of rotation |
| 1st condition for equilibrium | The vector sum of the forces in any direction is zero |
| 2nd condition for equilibrium ( = Principle of moments) | The vector sum of moments about any point is zero |
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