Answer: 1925 joules
Step-by-step explanation:
weight of man = 550 N
height climbed = 3.5m
Work = ?
Since, work is done when the man pulled his weight over the height; work is expressed as the product of weight and height climbed
i.e Workdone = 550N x 3.5m
= 1925 joules
Thus, the man did a work of 1925 joules while climbing