How Does Tension Affect Friction Force Between m1 and the Surface?

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SUMMARY

The discussion focuses on the role of tension (T) in determining the friction force between mass m1 and the surface in a pulley system. It clarifies that tension affects m1 horizontally, while the vertical component arises from the net forces acting on the mass, as illustrated in the free body diagram. The frictional force acts horizontally to counterbalance the tension force, establishing a crucial link between the two masses in the system.

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Familiarity with free body diagrams
  • Basic knowledge of frictional forces
  • Concept of tension in pulley systems
NEXT STEPS
  • Study the application of Newton's second law in multi-body systems
  • Learn how to construct and analyze free body diagrams
  • Explore the relationship between tension and friction in pulley systems
  • Investigate the effects of different surface materials on friction coefficients
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Physics students, educators, and anyone studying mechanics, particularly those interested in the dynamics of pulley systems and the interplay between tension and friction forces.

senior
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In (the partial) solution, why does it consider the Tension,T, for finding the friction force between m1 and the surface? The tension is only affecting m1 in the horizontal direction. From where, the vertical component is apperaing?
 

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from ƩF = ma and the free body diagram - the frictional force also acts horizontally to oppose the tension force so you need it.
Ultimately, it will form the link between the two masses.
 
senior said:
The tension is only affecting m1 in the horizontal direction.
Careful. The tension pulls on the pulley--which is attached to m1--in two directions.
 

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