The increments themselves form a geometric sequence: increase after 1st = 12*r, but since the force grows multiplicatively by 15% more than the last jump, the total force is a geometric series with initial term a = 12 and common ratio r = 1.15 (each new force is previous + 15% of the *amount* of increase — but since the problem states "increases by 15% of the previous increase", and assuming multiplicative effect on total, we model total finite model as a geometric series with a = 12, r = 1.15, n = 6. - Appfinity Technologies