Em

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Across
  1. 2. theorem — Moment of a force equals sum of moments of its components
  2. 4. truss — Structure made of members joined at ends in a plane
  3. 7. — Two equal and opposite forces causing rotation
  4. 10. of joints — Truss analysis method using joint equilibrium
  5. 13. forces — Forces acting in different planes
  6. 15. — Single force representing combined effect of many forces
Down
  1. 1. theorem — Three-force equilibrium relationship in a system
  2. 3. — Principle that total effect equals sum of individual effects
  3. 5. — Condition where net force on a body is zero
  4. 6. body diagram — Isolated sketch showing all forces on a body
  5. 8. — Turning effect of a force
  6. 9. of sections — Truss analysis method using cut sections
  7. 11. system — Arrangement of multiple forces acting on a body
  8. 12. — Resistive force opposing motion
  9. 14. of friction — Rules governing magnitude of frictional force