How Does the Force on the Ceiling Change in Different Bosun's Chair Scenarios?

[IbadatPHY]

Homework Statement

A man sits on a bosun's chair that dangles from a massless rope, which runs over a massless pulley and back down to the man's hand.

mass of man and chair: 95kg

<---These are the ones that i could do.---->
1) With up force is the man suppose to pull go up at constant velocity?
2) With an upward acceleration of 1.3 m/s^2?
3) If another man below pulls on the rope from below, what force?
4) With an upward accell of 1.3 m/s^2?

Homework Equations

What is the magnitude of force on the ceiling from the pulley system in 1), 2), 3), 4) ?

The Attempt at a Solution

I can't visualize if there would be any force different, unless they would all be the same..

 

[Delphi51]

The force will depend on the acceleration because of F = ma.
Any other forces involved?
Looks rather tricky to me - better start with a free body diagram.