Why have you listed the subject as "Cleveland"?
The static friction coefficient is the force reuired to start it moving, divided by M g.
The kinetic friction coefficient is the force required to keep it moving at constant speed, divided by M g.
M g in this case is 28 x 9.81 Newtons
A 28 kg chair intially at rest on a horizontal floor requires a 360 N horizontal force to set it in motion. Once the chair is in motion, a 329 N horizontail force keeps moving it at a constant velocity. The acceleration of gravity is 9.81 m/s^2. What is the coefficient of static friction between the chair and floor?
1 answer
1 answer