A box of mass 100 kg is sitting on a surface that that has an angle of inclination of 20 degrees. The coefficient of kinetic friction between the surface and the box is 0.1 and the coefficient of static friction is 0.35. What force must be applied up the ramp to just prevent the box from sliding down the incline. Assume that down the incline is the +x direction. a) 38.7 N b) 13 N c) 59.2 N d) 97.4 N e) 0.35 N
