A different type of pulley question -help

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To determine the force needed for a man in a box attached to a pulley to pull himself up at a constant velocity, it's essential to recognize that he experiences an upward force from both sides of the rope. When accelerating upwards, the net force acting on the man and box unit must account for both gravitational force and the additional force required for acceleration. Applying Newton's second law, the total upward force must exceed the weight of the man and box to achieve acceleration. The realization that the man effectively has double the force pulling him up is crucial for solving the problem. Understanding these forces clarifies the mechanics of the pulley system.
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Okay, I have this crazy pulley question where a guy is sitting in a box that is attached to a pulley on the ceiling (the pulley system is ideal). He pulls himself up at a constant velocity -how do i find the force needed for him to pull himself up? (the rope goes around the pulley and back down to him- halfway around the pulley)
What about if he is accelerating upwards?
 
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Identify all the forces acting on the "man + box" (treat them as a unit). Note that the man pulls down on one end of the rope, but both ends of the rope pull up on him. Apply Newton's 2nd law.

You may find this discussion helpful: https://www.physicsforums.com/showthread.php?t=46892
 
thanks! I got it! - I didn't realize that the man had double force pulling up on him!
 

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