Question

The force of friction between an object and the surface upon which it is sliding is 360n. The mass of the object is 95kg. What is the coefficient of kinetic friction?.

Answer 1

Answer:

$\mu=0.387$

Explanation:

The force of friction can be found using $f=\mu N$, where N represents the normal force on an object.  N can be found using N=mg:

$m=95kg\\g=9.8\frac{m}{s^2}\\N=(95kg)(9.8\frac{m}{s^2})\\N=931N$

Rewrite the friction equation to solve for the friction coefficient:

$\mu=\frac{f}{N}\\f=360N\\N=931N\\\mu=\frac{360N}{931N}\\\mu=0.387$

This answer is logical because the coefficient of friction ($\mu$) is unitless and must be larger than 0 and less than 1.