A student wants to determine the range of masses that can be hung to keep a block at rest on a table as shown. The coefficient of static friction between the 30 kg box and the surface is 0.3 and the coefficient of kinetic friction is 0.15. What is the smallest mass (m) that will keep the system at rest? In this case, what is strength of the friction? In this case, what direction is the friction? What is the largest mass (m) that will keep the system at rest? In this case, what is strength of the friction? In this case, what direction is the friction?
