Using a horizontal force of 200N , we intend to move a wooden cabinet across a floor at a constant velocity. What is the friction force that will be exerted on the cabinet?
In order to move the cabinet across the floor at a constant velocity, the net force experienced by it must be zero. Thus a frictional force of 200N must be exerted on the cabinet to move it across the floor at a constant velocity, against the horizontal force of 200N .
