Kalispera se olous. Exw mia aporia poy afora tin kinisi tou podilatou. Pio sugkekrimena:
Otan to podilato einai akinito, einai sxedon apithano na parameinei kapoios panw tou, xwris na pesei. Akomi kai se ideates sunthikes (apousia aera, apoliti eythigrammisi tou podilati panw se ena entelws symmetriko kai apsegadiasto podilato klp klp), katalavainw oti i thesi auti einai mia thesi astathous isorropias. I paramikri kinisi, arkei gia na tin katastrepsei.
Otan kinoumaste panw se ena podilato, me eythigrammi omali kinisi gia paradeigma, etsi wste na mi vriskomaste se ena epitaxunomeno systima anaforas, i isorropia ginetai poly pio eystathis. Einai poly pio eukolo na parameinoume stin poreia mas kai na mi pesoume apo to podilato, askwntas mikres i megales dynameis sto timoni, sta petalia klp.
Yparxei kamia idea panw sto zitima auto? Giati mporei na symbainei kati tetoio?
As pw thn apopsh mou. Otan kinoumaste me to podhlato, anapofeukta teinoume na ektelesoume kykloeidhs kinhshs me kapoia aktina kampylothtas. Logw aytoy, dexomaste th fygokentro dynamh h opoia exei fora anti8eth apo auth pou teinoume na pesoume. Ayth h fygokentros fainetai pws eksoudeterwnei th mikrh synistwsa tou varous pou teinei na mas riksei. Thn apopsh ayth posteuw pws thn enisxyei to gegonos pws oso perissotero trexoume toso pio dyskolo einai na pesoume (F~u). Apo thn allh, otan oso ligotero apoklinoume ap thn katakoryfo toso megalyterh einai h aktina kampulothtas etsi wste h F->0 (F~1/R). Epomenws den dexomaste dynamh.
File jk423, se adraneiaka systimata anaforas, opws auto pou perigrafw sto provlima, den ufistatai h legomeni "fygokentros dynami", apla den yparxei! H allagi poreias pou mas glitwnei apo tin ptwsi ofeiletai ston idio ton podilati, o opoios asinideita metatopizei to varos tou panw sto podilato, se sxesi me ti gi, enw askei ena swro apo dynameis panw sto idio to podilato.
Genika pantws, nomizw pws ama mplexoume me dynameis tha fame ta moutra mas. Ektos tou varous, askountai dynameis sta dyo petalia, sto timoni, sto kathisma, ayxanontas arketa tous vathmous eleytherias tou systimatos, katastwntas to arketa poluploko gia na lythei me auto ton tropo.
Eswterikes dynameis metaksy podhlath-podhlatou yparxoun eite vriskontai se kinish eite oxi. Den amfivalw oti metatopizoume to kentro mazas kata voulhsh gia na petixoume kalh issoropia. Ama valeis enan kaskanter na isoropisei se ena akinhto podilato autos 8a to kanei. To thema einai oti sthn kinhsh auto ginetai poly pio eukola, k den xreiazetai wres proponhshs gia na to petyxeis. Epomenws *kati* mas dieukolynei.
Otan odhgoume, pote den kanoume eu8igrammh omalh kinhsh opws les. Auto pou kanoume einai mikra zik-zak gia na krathsoume thn isorropia mas. Kata ta zik-zak auta, h mhxanh gernei pros mia meria. An akariaia mhdenizame thn taxythta ths mhxanhs, tha peftame katw. Yparxei loipon kapoia dynamh pou mas krataei se isorropia.
Isws na einai h fygokentros, h opoia yparxei ka8ws ekteloume mikres kykoleidhs kinhseis (zik-zak) me kapoia (metavlhth) aktina kampylothtas. Den gnwrizw omws an to metro ths dynamhs auths einai arketa megalo gia na mas krathsei or8ious.
Isws na kryvetai kai kapoio allo fainomeno apo pisw (px diathrhs stroformhs stis rodes).
Ma me tin idia logiki afto de simeni oti ama trexoume poli grigora afti i dinami tha gini poli megali kai sinepos tha pesoume kato? Episis an kapios stathi pano sti sella eno to podilato trexi kai pidiksi katakorifa oste na min diataraksi poli tin kinisi tou podilatou tote tha paratirisi oti to podilato mexri na ftsi mia mikri taxitita tha kinite xoris na pesei, ola afta xoris anavati!!
Kat`arxas den gnwrizoume poso einai to metro ths fygokentrou. Mhn ksexnas oti h aktina kampylothtas tha einai erketa megalh mias kai h klish pou pernoume otan odhgoume (hrema) einai poly mikrh. Gia na mhn symvainei auto pou les h fygokentros tha exei tetoio metro wste na mas eksisoropei to varos. Kathos plhsiazoume thn katakoryfh thesh, h synistwsa toy varous meiwnetai opws meiwnetai k h fygokentros. Otan trexoume poly grhgora, mia mikrh klish tha eixe san synepeia mia para poly megalh aktina kampylothtas. Nai men F~u alla kai F~1/R. An synexisei to podhlato xwris anavath, den tha synexisei se eytheia grammh, alla-exw thn entypwsh pws-tha stripsei. O anavaths einai autos poy niwthei oti xanei thn isorropia kai metatopizei to kentro varous katallhla.
ena toso astathes systima den exei mathimatikh analysh einai sa na rwtaei kaneis alla pragmata peri aeriwn .. anaptirwn kai giati pote anaybei kai pote oxi ....
Iparxoun pola kai periploka fenomena pou boi8oun stin isoropia. O aplousteros logos ine i diatirisi tis stroformis pou exoun i rodes (fenomeno giroskopiou). Den ine omos autos o simantikoteros mixanismos. Ousiastika isoropia kratame "pezontas" me to timoni. An ixame aklonito timoni to fenomeno giroskopiou 8a mas kratouse se isoropia gia liga mono deuterolepta. Otan pame na pesoume px pros ta deksia strivoume (asines8ita) kai to timoni ligo pros ta deksia. Etsi kanontas mia mikri deksiostrofi kinisi i "figokentros" mas o8i pros ta aristera, opote erxomaste ke pali sta isa mas.
Eswterikes dynameis metaksy podhlath-podhlatou yparxoun eite vriskontai se kinish eite oxi. Den amfivalw oti metatopizoume to kentro mazas kata voulhsh gia na petixoume kalh issoropia. Ama valeis enan kaskanter na isoropisei se ena akinhto podilato autos 8a to kanei. To thema einai oti sthn kinhsh auto ginetai poly pio eukola, k den xreiazetai wres proponhshs gia na to petyxeis. Epomenws *kati* mas dieukolynei.
Otan odhgoume, pote den kanoume eu8igrammh omalh kinhsh opws les. Auto pou kanoume einai mikra zik-zak gia na krathsoume thn isorropia mas. Kata ta zik-zak auta, h mhxanh gernei pros mia meria. An akariaia mhdenizame thn taxythta ths mhxanhs, tha peftame katw. Yparxei loipon kapoia dynamh pou mas krataei se isorropia.
Isws na einai h fygokentros, h opoia yparxei ka8ws ekteloume mikres kykoleidhs kinhseis (zik-zak) me kapoia (metavlhth) aktina kampylothtas. Den gnwrizw omws an to metro ths dynamhs auths einai arketa megalo gia na mas krathsei or8ious.
Isws na kryvetai kai kapoio allo fainomeno apo pisw (px diathrhs stroformhs stis rodes).
