posted by Nate .
A 25 kg chair initially at rest on a horizontal floor requires 393 N horizontal force to set it in motion. Once the chair is in motion, a 301 N horizontal force keeps it moving at a constant velocity.
a) Find the coefficient of static friction between the chair and the floor.
b) Find the the coefficient of kinetic friction between the chair and the floor.
Use the definitions to answer the questions:
(a) coeficient of static friction =
(force required to start motion)/weight
(b) coefficient of kinetic friction =
(force required to maintain constant velocity)/weight
(Make sure you use weight = M*g)