Trailer Truck III Trailer Truck III Rank, from greatest to least, on the basis of the difference between the strength of the force the cab exerts on the trailer minus the strength of the force the trailer exerts on the cab. All the trailers and cabs are identical.
All inclines are the same.
Type 'Y' if all the ropes marked R are under the same tension. Type 'Z' if there is no tension in any of the ropes. Please explain the reasoning for your ranking.