1. The problem statement, all variables and given/known data When you apply a horizontal force of 44 N o a block, the block moves across the floor at a constant speed (μk = μs). When you apply a force of 50 N, what is the magnitude of the horizontal component of the force that the floor exerts on the block? 2. Relevant equations ffriction ≈ μkFN 3. The attempt at a solution I'm not sure how to go about this. If the question asks for the horizontal force, do I still need to use the force of gravity in my calculations? An explanation is appreciated, with or without the answer. I want to know how to do this, not necessarily know what the answer is.