Cable telescopic mast 2

There are 3 cables. Black cable controls the green tube. One end of it is fixed to the motor pulley, the other end to the green tube. Red cable controls the yellow tube. One end of it is fixed to the white tube, the other end to the yellow tube. Blue cable controls the blue tube. One end of it is fixed to the green tube, the other end to the blue tube. L = n*G n: number of movable tube. Here n = 3 L: displacement of the blue tube (the uppermost tube). G: displacement of the green tube (the lowermost movable tube). STEP files of this video: Inventor files of this video: