When two objects slide by one another, which of the following statements about the force of friction between them, is true?
a. The frictional force is always equal to μk b. The frictional force is always less than μk. c. The frictional force is always greater than μk. d. The frictional force is determined by other forces on the objects so it can be either equal to or less than μk.

Question

26-10-2022
Physics

Answered

When two objects slide by one another, which of the following statements about the force of friction between them, is true?
a. The frictional force is always equal to μk b. The frictional force is always less than μk. c. The frictional force is always greater than μk. d. The frictional force is determined by other forces on the objects so it can be either equal to or less than μk.

Answer :

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Qwmonkey Qwmonkey · Answer 1 · 2022-10-28T12:27:10-04:00

The force of friction is always greater than μk.

The coefficient of static friction is always greater than the coefficient of kinetic friction because the interaction between the surfaces is more established when the surfaces are at rest. But as normal forces can change, so same does not hold in the case of friction forces.

The frictional force has a greater value than the kinetic friction because static friction acts when the body is at rest, and there is much more inter-molecule attraction between the object and the surface for a long time which is required to be overcome first.

The number of forces applied to keep an object in a stationary position is more than those forces which make it accelerate until an external force is applied.

Therefore when two object slide by one another the force of friction between them is always greater than μk.

To know more about the force of friction refer to the link given below:

https://brainly.com/question/14486363

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