1. The problem statement, all variables and given/known data A uniform board of length and mass lies near a boundary that separates two regions. In region 1, the coefficient of kinetic friction between the board and the surface is , and in region 2, the coefficient is . The positive direction is to the right.(Image uploaded) Q.Find the net work done by friction in pulling the board directly from region 1 to region 2. Assume that the board moves at constant velocity 2. Relevant equations Work=ForceXDistance F=muXN 3. The attempt at a solution i dont know ow to find F and don't know integration. So I am stuck on this problem. Please help?