A rope is lying on a table. You pick up one end and start raising it with a constant velocity. The force you have to exert on the rope is
A) equal to the weight of the portion of the rope that is not on the table.
B) greater than the weight of the portion of the rope that is not on the table.
C) less than the weight of the portion of the rope that is not on the table but not zero N.
D) zero N.
E) Cannot be determined without additional information.
B
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