Question

Mr. Mangan is sliding across the floor in his socks. If Mr. Mangan has amass of 86 kg and the floor applies 150 N of friction force onto Mr.Mangan, what is the coefficient of kinetic friction between Mr.Mangan's socks and the floor?

Answer 1

Given data:

* The mass of the Mangan is 86 kg.

* The friction force applied by the floor on the Mangan is 150 N.

Solution:

The normal force acting on the Mangan is,

`F_N=mg`

where m is the mass of Mangan, and g is the acceleration due to gravity,

Substituting the known values,

`\begin{gathered} F_N=86*9.8 \\ F_N=842.8\text{ N} \end{gathered}`

The friction force acting on the Mangan is,