Problem:

A small exercise with 3 forces applied on the incisor.

F1 equals 40 gr. and is vertical.

F2 is horizontal and is 80 gr.

F3 is a Class II elastic generating 100 gr. 12 mm away from the bracket at an angle alpha of 30 degrees.

Can you calculate the resultant force system at the center of resistance?

  • d1= 14mm
  • d2= 8mm
  • d3= 12 mm

Have fun!

Solution: