1. The problem statement, all variables and given/known data A block of mass m1 = 2 kg and a block of mass m2 = 3 kg are tied together and are pulled from rest across the floor by a force of Fp = 20 N. The coefficient of friction of the blocks with the floor is µ = 0.23. 2. Relevant equations What is the acceleration of the two blocks? 3. The attempt at a solution a=F/(m1 + m2) a=20N/(2kg + 3kg) a=4 m/s^2 ??? I know that somehow µ = 0.23 is involved, but i dont know where to use it.