It will obviously increase. as in the first case two people were handling the force was being divided. but now in this case single person is there so the force will increase.
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that's the wrong answer. thanks anyway I've got the answer

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I guess the weight experienced by the man or the force exerted by the beam on the person will decrease.

The log / beam  falls freely on to the ground with one end (like a pivot) on the shoulder of the man still carrying it. 

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