how to calculate the force u need to move a heavy thing (the thing touch a surface) along the surface.?

Question

please give exemples if anyone have.thx!

Answer 1

look up stuff like static friction, and your coefficient of friction...

Answer 2

You can calculate the maximum frictional force using



F=uN



Where

- F is the frictional force,

- u is the "coefficient of friction", a number we use for those particular surfaces,

- N is the "Normal reaction", which is the force pressing the surfaces together (mass x gravity for example)



You can find u by transposition F/N = u