I wanted to create an assembly in which i wanted to mate so many torsional springs to some parts and to cause tension when this parts are rotating. I wanted an actual scenario of this , not like using sketch coincidence relation. eg: you can use CAM & Follower mates in the mechanical mates section. Is there any similar option we can do to simulate the parts by the tension of springs. 

Tell me  if there is no such feature called springs in solidworks, why they are not bringing it.