Answer to Question #66454 in Classical Mechanics for Anna

Question #66454
There are two masses resting on top of one another. Mass A being on top and mass B is on the bottom. There is friction between the two masses but no friction between the bottom box and the surface on which it lays. There is a string connected to mass A that loops around a fixed pulley on a wall and connects back to mass B. My question is, if you were to pull the bottom box away from the wall, would it a) have a force of friction acting on it and b) would both masses have the same acceleration (just different directions)?
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