Friction Force & Tension: Exploring the Mystery

• senior
In summary, friction force is the resistance force that occurs when two surfaces come into contact and slide against each other. It can either help or hinder motion and is affected by the nature of the surfaces, the force pressing them together, and their roughness or smoothness. Tension, on the other hand, is a pulling force that can cause objects to stretch or deform and also keep them in place or maintain their shape.

senior

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.

What is friction force?

Friction force is the resistance force that occurs when two surfaces come into contact with each other and slide or try to slide against each other.

How does friction force affect motion?

Friction force can either help or hinder motion depending on the situation. It can help to slow down or stop an object in motion, but it can also provide the necessary force to start motion.

What factors affect the amount of friction force?

The amount of friction force depends on the nature of the two surfaces in contact, the force pressing the surfaces together, and the roughness or smoothness of the surfaces.

What is tension?

Tension is a pulling force that occurs when an object is stretched or pulled by a force acting in the opposite direction.

How does tension affect objects?

Tension can cause objects to stretch or deform, as well as provide the necessary force to keep an object in place or maintain its shape.