A leather belt is required to transmit 9 kW from a pulley 120 cm in diameter running at 200 rpm. The angle embraced is 165 and the coefficient of friction between leather belt and pulley is 0.3. If the safe working stress for the leather belt is 140 N/cm, the mass of leather is 1 gm/cm and the thickness of the belt is 10 mm, determine the width of the belt taking the centrifugal tension into account for i) open belt system, and (ii) Cross belt system. [6]