Final answer:
Without additional information, such as the angle at which the rope is pulled or the exact setup, we cannot determine the precise force the medium person can pull with. However, physics concepts like tension and vector resolution play a crucial role in solving similar problems.
Step-by-step explanation:
The question seems to be based on the concept of forces in physics, specifically the tension in a rope when pulling an object. This relates to understanding how forces result in tension and the resultant force on an object when a rope is used to apply a force at an angle to its midpoint. We do not have enough information to directly answer the question, as details such as the displacement of the rope's midpoint or the force applied by the person are missing, and the format of the question seems mixed up. However, using the principle that if you know the angle and the force applied to the midpoint of the rope, you could calculate the resultant force exerted on the object using trigonometry and the properties of tension in the rope.
To answer questions like these, one would typically apply concepts such as Newton's laws of motion, tension in a rope, and vector resolution. The answer would depend on the specific numbers provided in the question which are currently missing.