The inner and outer radii of a single plate clutch are 40 mm and 80 mm respectively. Determine the average pressure (in kN/m2 units) when the axial force is 3 kN.
1
\(30000\over 64\ \pi\)
2
\(10000\over 8\ \pi\)
3
\(3000\over 4\ \pi\)
4
\(10000\over 16\ \pi\)