Un objet se trouvant à une distance r= 9016,226 km du centre de la Terre subit une accélération gravitationnelle de 4,9 m/s2. Si cet objet décrit une orbite
circulaire autour de la Terre, quelle est sa vitesse?

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,?