(Solved):   1. A band brake is required to reduce the speed of a shaft assembly with an inertia of 78 ...

 

1. A band brake is required to reduce the speed of a shaft assembly with an inertia of 78 N.s?.m from 1140 rpm to 100 rpm in 10 seconds for synchronization purposes. The available space allows for a maximum drum diameter of 300mm and a wraparound as shown in the figure. Assume the belt to have a coefficient of friction of 0.3 and an allowable lining pressure of 450 kPa. Calculate the required belt width b and activating force P to ensure the required speed reduction. (12 Marks) 75 mm -250 mm