When we throw an object vertically upwards its initial velocity: a. it will be less than the final
b. it will be greater than the final
c. it will be equivalent to the final
d. it remains constant until reaching its maximum height

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,?