1. a unit force is applied at coordinate j and the displacements are calculated at all coordinates
  2. a unit displacement is applied at co-ordinate j and the forces are calculated at all coordinates
  3. a unit force is applied at coordinate j and the forces are calculated at all coordinates
  4. a unit displacement is applied at co-ordinate j and the displacements are calculated at all co-ordinates
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1 Answers

Answer: Option 1

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