1. The problem statement, all variables and given/known data The weight of the block in the drawing is 84.0 N. The coefficient of static friction between the block and the vertical wall is 0.520. (a) What minimum force is required to prevent the block from sliding down the wall? in Newtons (b) What minimum force is required to start the block moving up the wall? (Hint: The static frictional force is now directed down the wall.) in Newtons 2. Relevant equations 3. The attempt at a solution having problems figuring this out, is there a formula for the force sliding down the wall. also, wouldn't the minimum be the .520 just the static force? thanks.