what is the force of friction? In which direction does it work?
Answers
Answer:
A force is a push or pull upon an object resulting from the object's interaction with another object.Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. If you apply the force along the right, the friction acts along the left direction. In both cases the force opposes the motion of the book. The force of friction always opposes the applied force.
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Explanation:
What is the force of friction? In which direction does it work?
=> Frictional force offers the resistance to the applied force opposing its motion. Thus, it always acts in the direction opposite to that of the object in motion. If force is applied to the left, then friction acts in the right.
If the displacement is in the direction of the force, then work is positive. If the displacement is in the opposite direction of the force, then work is negative. If the displacement is perpendicular to the direction of the force then work is zero. So, the work done depends on direction.
The physics definition of "work" is: Work can be either positive or negative: if the force has a component in the same direction as the displacement of the object, the force is doing positive work. If the force has a component in the direction opposite to the displacement, the force does negative work.