You see these mentioned quite a lot on T-Nation without anyone explaining what they are.
Am I understanding this right…
A squat rack enables you to weight the bar in a high position before picking the weight up, but the squat movements are essentially free weight and controlled by yourself (Weight the bar - Step Back - Take the weight - step forward - squat - once done step back and put the bar back in the rack to unload)
A Smith Machine is similar but the bar is attached to the rack at all times so like any other machine the range of movement is controlled by the machine?