With the system at I w: know that the net force on the u pended ma-s is zero. auld W can use this as our first calibration point for th : face probe. Click on the little green LabPro icon top left on the screen,, then click on the picture of the force probe, then on the option "Calibrate ", and then Calibrate Now . Enter the met force of G.UN and click "Keep". For the second point, gently add a second 200g mass so that the system comes to rest at its new equilibrium position. Enter a force of 1.96N, click "Keep", "Done", and "Close", and remove the extra 260g mass. Where did the number 1.36 come from