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Asked by Shilpi Last Modified
Answer 
Pooja R. Jain
he frictional force acting on a moving object opposes the direction of its motion. This type of friction is called kinetic friction or sliding friction. When an object is sliding or moving across a surface, the irregularities and microscopic features on the surfaces interact, leading to resistance against the motion. The frictional force acts opposite to the direction in which the object is moving.
If the object is moving to the right, the kinetic friction force will act to the left. Conversely, if the object is moving to the left, the kinetic friction force will act to the right. The direction of the kinetic friction force is always in opposition to the direction of motion, working to slow down or stop the object's movement.
Mathematically, the kinetic friction force (F_k) can be expressed as:
Fk=μk⋅NFk=μk⋅N
where:
It's important to note that the coefficient of kinetic friction (μkμk) is a dimensionless quantity that represents the ratio of the kinetic friction force to the normal force. The value of μkμk depends on the nature of the materials in contact and their surface conditions.
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