A 24 kg chair initially at rest on a horizontal floor

A 24 kg chair initially at rest on a horizontalfloor requires a 378 N horizontal force to setit in motion. Once the chair is in motion, a344 N horizontal force keeps it moving at aconstant velocity.The acceleration of gravity is 9.81 m/s2 .a) What is the coefficient of static frictionbetween the chair and the floor?