Hej, jag har två läx, och kan inte hitta svaret på två frågor
1. Ett rör med, ytterdiametrn 190mm och innerdiametrn 175mm klarar av en drag-spänning på 55N/mm2, beräkna den maximala vikten som röret kan belastas med.
2. Vilken tjocklek ska ett plattjärn med bredden 60mm ha om den vid dragning ska utsättas för 67kN Rm=500N/mm2 och nB = 7.5.
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