Thank you for responding!
https://www.google.se/search?q=dyna...B&biw=360&bih=512#imgrc=d3cklw9wGJhFCM:&isa=y
This is a dynamometer. If you hang an object in the hook of it you can measure the force (in Newton) and then calculate the mass.
Homework Statement
Hello! I have a physics problem that I can't solve. I'm supposed to describe how I can calculate the mass when knowing the µv (I don't know the english term but I'm guessing friction...something (friction when the object is not moving)). You are allowed to use a dynamometer...