Can a body diagram with the forces acting upon the objects be drawn/included, and can it be solved step by step 6) 17.6 N9) 0.131

6) A 2 kg block sits on a 4 kg block that is resting on a frictionless surface . See diagram. The coefficients of friction between the blocks are u, = 0.3 and He = 0.2. What is maximum force F that can be applied if the upper block is not to slide on the lower block? 9) At Magic Mountain there is a ride in which people stand up against the inside wall of a large cylinder of radius 3 m. The cylinder is then spun with a velocity of 15 m/s at which point the floor drops away leaving the riders suspended against the wall. What is the minimum coefficient of static friction between the rider's clothing and the wall in order to keep the rider from sliding down