... with a mass of 140 grams (g). A coefficient of friction/= 0.3 can be achieved. The inner diameter of the drum is 75 mm, and the radius Rto the center of gravity of each shoe ... padse Angular position of actuation force, deg0 Angle of wrap, deg0 Angular position, deg01 Starting position of brake shoe lining, deg02 Ending position of brake shoe lining, ... forces are used in a variety of ways to couple two sides of a clutchor a brake. The use of electrically generated forces implies relatively easy means of automatic control.30.8.1...