A plurality of belt/pullet sets. Each belt/pulley set has a weight set. Each weight set is based on a formula of (2)n-power(X) where X is a basic weight and n is integral number for selecting a weight by a user. Each weight uses a different n-power. A carrier plate is utilized for bearing a weight set during a movement of an exercise. A clamping mechanism is utilized to couple each belt/pulley set to the carrier plate. In addition, the weight system includes an exercise device for a user to exercise, such as a bar or handle. A cable is coupled to the carrier plate, weight set, and the exercise device. In another embodiment, the formula may be utilized in a variable distance system or robotic arm where a plurality of cylinders moves an object, such as a travel arm.