2. Problem 8-107 TJ Arnot & Russell Roman 1. Draw Free Body Diagram 2. Set Up Equilibrium Equation 3. Solve for Component Tensions 4. Solve Frictional Analysis Equations Approach Problem Statement: The drive pulley B in a video tape recorder is on the verge of slipping when it is subjected to a torque of M = 0.005 N*m. If the coefficient of static friction between the tape and the drive wheel and between the tape and the fixed shafts A and C is μ s = 0.1, determine the tensions T 1 and T 2 developed in the tape for equilibrium.

3. Free Body Diagram T1T1 T2T2 T3T3 T4T4.01 m M =.005 N*m A C B

4. Equilibrium Equation Equilibrium equation for pulley B. T3T3 T4T4.01 m M =.005 N*m B Solve.

5. Frictional Analysis T 3 opposes the direction of motion. T1T1 T3T3.01 m A

6. Frictional Analysis T 2 opposes the direction of motion. T2T2 T4T4.01 m C

7. Answer