Amulti-plate clutch is used to connect two shafts in line. in this, one set of plates can slide axially in a shell attached to one shaft while the other set of plates can slide along the second shaft. if the inner and outer diameters of the contact surfaces are 100 and 150 mm respectively and there are six contacts, find the axial thrust required to transmit 10 kw at 750 rev/min. assume that 0.3 and that the contact pressure times radius is a constant over each surface. find also the contact pressures at the inner and outer radii.