Asimple pendulum consists of a ball connected to one end of a thin brass wire. the period of the pendulum is 2.51 s. the temperature rises by 142 c°, and the length of the wire increases. determine the change in the period of the heated pendulum.

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,?