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Problem 8-107

Date post: 22-Feb-2016
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Problem 8-107 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.
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Problem 8-107

TJ Arnot & Russell Roman1. Draw Free Body Diagram2. Set Up Equilibrium Equation3. Solve for Component Tensions4. Solve Frictional Analysis EquationsApproach

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 s = 0.1, determine the tensions T1 and T2 developed in the tape for equilibrium.Free Body DiagramT1T2T3T4.01 m.01 m.01 mM = .005 N*mACB

Equilibrium EquationEquilibrium equation for pulley B.

T3T4.01 mM = .005 N*mB

Solve.Frictional AnalysisT3 opposes the direction of motion.T1T3.01 mA

Frictional AnalysisT2 opposes the direction of motion.T2T4.01 mC

Answer


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