Figure 2 below shows a brake with only one shoe, being applied by 1.5KN force F....

  

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Figure 2 below shows a brake with only one shoe, being applied by 1.5KN force F. Fou seconds after force F is applied, the drum comes to a stop. During this time the drum make 110 revolutions. Use the short shoe approximation and an estimated coefficient of friction of 0.35. (a) Draw the brake shoe and arm assembly as a free body in equilibrium. (b) Is the brake self-energizing or deenergizing for the direction of drum rotation involved? (c) What is the magnitude of the torque developed by the brake? (d) How much work does the brake do in bringing the drum to a stop? (e) What is the average braking power during the 4-second interval? (f) How far below the drum center would the arm pivot need to be to make the brake self locking for u= 0.35? F-1500 N 400 mm 500 mm Rotation 200 mm 340 mm Figure 2. single shoe brake Figure 2 below shows a brake with only one shoe, being applied by 1.5KN force F. Fou seconds after force F is applied, the drum comes to a stop. During this time the drum make 110 revolutions. Use the short shoe approximation and an estimated coefficient of friction of 0.35. (a) Draw the brake shoe and arm assembly as a free body in equilibrium. (b) Is the brake self-energizing or deenergizing for the direction of drum rotation involved? (c) What is the magnitude of the torque developed by the brake? (d) How much work does the brake do in bringing the drum to a stop? (e) What is the average braking power during the 4-second interval? (f) How far below the drum center would the arm pivot need to be to make the brake self locking for u= 0.35? F-1500 N 400 mm 500 mm Rotation 200 mm 340 mm Figure 2. single shoe brake

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ANSWER F The sell lo... View the full answer