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pg 71 - 5.2 MultipleObjects 71 cat 51 we wn c twh vector...

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Unformatted text preview: 5.2 MultipleObjects 71 cat: 51') we wn c twh vector equations. climber, Ti-Pg Crimea.c rock "TY""+Fm +n=mifir bet and rack,- rcspacti'vcly. ' an 113:: the .sam'c . BantamOur-'free~bodydjagramsidr - _ ' ‘iaiths'dimberand(b)'t_iie;rt1tk_. at _at' the' y' companem of Newttjr'is law . . - _ _ . 1 511:. Far the rock; the onlyhori~ _ ng-t thc‘rightm'pos'itivexdirection, -- ' - _ ‘50 the: tricks x atluatibn is T: ' —,m 171,. Sines it"s'on a horizgntal 51111306.. ' _i rim mgk has 'no: vertical accslclgation; so its‘. 3: squati'an is 11 mg; ~—';D' _ 111 Writing these equations We haVen t added the subScti'pts x tint] y 136— f - cause each vector has only a single, ngnzar'o cpmpogiemt- Now we med to Consider the muncctim betWeen rock had climbs: Thats', the rope, -_ ami- its presence means that the magnitude of latit'h ancelstafiahs Is this same Calling that magnitude '11, we can see Pram Pig ' ‘ and-1a = -_a The vzilne for- the rod: is positive 1- , fight, Which W'c' de'fillfld' as the pps'itivs x fireman; 31c Vahic ft’ir thc _ - cljmhsr“ is négat'ive became: he’ s accelerating downw'aid'; which we dc; _ ' -' fined as the negativc y dirsction' The rope, fimherniore has Incgligihle'.‘ E[51l3E5.Z' ‘A 'cli'mber'in troubie. . . ' - ' _ . . " ' cantz’d. ...
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