Q3 / A multi – plate clutch is to transmit 12 kW at 1500 r.p.m. The inner and outer radii for the plates are to be 50 mm and 100 mm respectively. The maximum axial spring forces is restricted to 1 kN. Answer the following questions 1- The necessary number of pairs of surfaces is µ= 0.35 assuming ..... .... constant wear. 2- The necessary number of pairs of surfaces is constant pressure. µ= 0.18 assuming 3- The axial force

A)It is required to use a multiplate clutch to transmit power of 24 kW at 1200 r.p.m. If the clutch has the following data: • The Outer and inner plate radii are 120 mm and 80 mm respectively. • Maximum axial pressure pmax=0.12 N/mm?. • Coefficient of friction=0.3. Find: 1. The axial load (W) required. 2. The number of effective pairs of contact surfaces (n).

Please help. Written on paper not typed on computer please. Need help on all questions. Please include all units, steps to the problem and information such as its direction or if it is in compression or tension. Thx.