Answer to Question #141191 in Mechanics | Relativity for Akinibom Sandra

Question

Investigate the laws of sliding friction between wood and iron?

Answer 1

The coefficient of kinetic (sliding) friction can be found by the following experiment:. Take a piece of wood and put it on a horizontal flat metal plate. The attach spring scales to the wood and start pulling it horizontally so that the motion is uniform (without jerks and changes of speed). You'll find out that the spring extends. The coefficient of kinetic friction can be found by dividing the force obtained on the scales f by the mass and acceleration due to gravity:

$$\mu_k=\frac{f}{mg}.$$