effects angles on forces, Fn, Fk and μ?

May 2021 2 58 Report

effects angles on forces, Fn, Fk and μ?

how does these forces change with decrease or increase in their angles.

1) Normal force (Fn)

2) kinetic friction (Fk)

3) mu (coefficient of friction) or μ

Thanks

Set up a coordinate system, Cartesian (x,y) will work fine.

When an object is on a horizontal surface, it only has a N force in the y direction.

If you place the object on an inclined plane, it now has a normal component of both x and y.

Apply Newton's 2nd to the normal direction, where acceleration is 0, to find that:

F=N-mgcos(\theta)

ie: N=mgcos(\theta)

Kinetic Friction is μN.

μ is a constant depending on the two different surfaces unaffected by angle of inclination.