In a multiple–disc clutch, the axial intensity of pressure is not to exceed 0.2 MPa. The inner radius of the discs is 100 mm and is half the outer radius. The axial force per pair of contact surfaces in N is

In a multiple–disc clutch, the axial intensity of pressure is not to

1.	In a multiple–disc clutch, the axial intensity of pressure is not to exceed 0.2 MPa. The inner radius of the discs is 100 mm and is half the outer radius. The axial force per pair of contact surfaces in N is
A.	2000 π
B.	3000 π
C.	4000 π
D.	6000 π
Answer» D. 6000 π