Positive SSL
1 一套環軸承之外徑為6cm,內徑為4cm,若軸向力為31.4kN,則軸承之壓力P為
A 1MPa
B 2MPa
C 3MPa
D 4MPa

P=F/A=(31.4×1000)/[(602-402)×π/4]

2MPa