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straight A space rod space of space length space l italic space and space radius space straight r space is space joined space to space straight a space rod space of space length italic space l italic divided by italic 2 space and space radius space r italic divided by italic 2 space of space same space material. space The space free space
end space of space small space rod space is space fixed space to space straight a space rigid space base space and space the space free space end space of space larger space rod space is space given space straight a space twist space of space theta to the power of ring operator space comma space the space twist
angle space at space the space joint space will space be space

  1. theta divided by 4
  2. theta divided by 2
  3. 5 theta divided by 6
  4. 8 theta divided by 9

The correct answer is: 8 theta divided by 9


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