Find the angle between forces of 41 pounds and 68 pounds given a magnitude of 87 pounds for the resultant force. (hint: write force one as a vector in the direction of the positive x-axis and force two as a vector at an angle θ with the positive x-axis.)

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?