Friction on an Inclined Plane

“A 25 kg mass is placed on an incline that makes an angle of 40° with the horizontal. The coefficient of kinetic friction between the mass and the incline is 0.25. Calculate the net force acting on the mass and its acceleration down the incline. Show all work. A 15 kg object is on an incline of 20° with a coefficient of static friction of 0.4. Determine the maximum static friction force that can act on the object before it starts to slide down the incline. Show all work.”