"250mn" - 1 õppematerjal

Ülesanded 1

= 25 2 + 20 2 = 1025 = 32 / 2 : = 32 / 2 = = -? : = 2 2 = = = 2 => = 2 2 = 2 × 9, × = = 3 f = 5Gr M = 100Mn t = 20 sek J -? Lahendus : M M = J × => J = = => 0 = => = = f => J = M × t t t f × J= = Hs Vastus J = Hs Ülesanne 4 = 250MN/m = × 3 kg m 3 = × 3 kg m 3 2 g = m s l- Lahendus d 2 F max g = F = mg - F => F = mg - F S S F = lSg ( teras - merevesi ) => m = teraselS => FA = merevesi glS => lSg ( teras - merevesi ) 250