1. The problem statement, all variables and given/known data M1=5.0kg μs1=0.30 M2=? μs2=0.20 What does M2 need to be in order to move? The interesting thing with this question is if it does move, will it move up or down? 2. Relevant equations Fun=ma Ffs=μsFn 3. The attempt at a solution I thought about this and if it's going to go up, that's one mass. If it goes down, that's another mass so will there be two masses? I also though, if it gave the static friction for both, maybe I thought of finding force of static friction for M1: Ffs=μsFn Ffs=(0.30)(mgcos30°) Ffs=(0.30)(5.0x9.8xcos30°) Ffs=12.7N After that, I think there will be a force of tension and a parallel force of gravity on M1 and if you add all these up with Ff, it must add up to 0...or not since it is a connected to a pulley that is being pulled (or not), it won't add up to 0?