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Frictional force is the force that opposes the motion of an object when it comes into contact with another surface. It is caused by the interactions between the surface molecules of the two objects rubbing against each other. The magnitude of the frictional force depends on the surfaces involved and the normal force pressing them together.
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On what does the frictional force depend?
Frictional force depends on the nature of the surfaces in contact and the force pressing them together.
What determines the size of a frictional force?
The size of a frictional force is determined by the roughness of the surfaces in contact and the normal force pushing them together. The frictional force opposes the motion of the objects and increases with the weight of the objects in contact.
Which frictional force is self adjusting force?
The static frictional force is a self-adjusting force. It increases or decreases to match the applied force, preventing the object from moving until the maximum threshold is reached.
What has frictional force needed to start an object at rest into motion?
The frictional force needed to start an object at rest into motion is the static frictional force. This force must be overcome by an external force before the object can start moving. Once the object is in motion, the kinetic frictional force will oppose its movement.
What does the frictional force vs normal force graph reveal about the relationship between these two forces?
The frictional force vs normal force graph shows that there is a linear relationship between the two forces. As the normal force increases, the frictional force also increases proportionally. This indicates that the frictional force is directly proportional to the normal force.
