vjezbe 2.pdf
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KINEMATIKA MATERIJALNE TOČKE – NASTAVAK
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ZADATAK ZA DOMAĆI RAD Greda BC duljine L rotira iz vodoravnog položaja u vertikalnoj ravnini oko točke C. Na vrhu grede nalazi se kolotura preko koje klizi nerastezivo uže kako je prikazano na skici. Uže je učvršćeno na kraju A, klizi preko kolotura u točkama B i C, te se krajem D giba konstantnom brzinom, horizontalno udesno. Treba odrediti brzinu i ubrzanje točke B u trenutku kada greda sa zidom zatvara kut 45 , ako je zadana brzina vD=10(m/s) i duljina grede L=8(m).
Napomena:
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Rješenje:
2B
B
m/sj067.19i105.1a
m/sji7.128v
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RJEŠENI ZADACI ZA SAMOSTALAN RAD
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