A single block brake, as shown in Fig, has a drum diameter of 720 mm. If the brake sustains 225 N-m torque at 500 r.p.m., find : (a) the required force (P) to apply the brake for clockwise rotation of the drum; (b) the required force (P) to apply the brake for counter clockwise rotation of the drum; (c) the location of the fulcrum to make the brake self-locking for clockwise rotation of the drum; and The coefficient of friction may be taken as 0.3. All dimensions in mm
the concept of tangential force Ft mentioned here is not entirely correct. At the contact point, there will only be a normal force and frictional force. No Ft will be there.
