line integral. The Weighted Stress Tensor is the recommended method. It is easier to select the regions upon which the force is to be computed (i.e. simply click on the desired blocks), and the force calculation tends to be a bit more accurate because it's a 2D integral instead of a line integral. For reference, an implementation of the WST block integral is shown in Figure 3 and an implementation of the MST line integral is shown as Figure 4. In this case, very similar forces are computed by each method: 1.11347 N for WST and 1.11289 N for MST. Both calculations are a reasonable match to the circuit theory prediction of 1.09478 N.