Answers

2016-03-05T18:22:38+05:30
mass = 70 +10 = 80 kg
height = 100 m
work done = mgh = 80 * 10 * 100 = 80,000 J

I hope it helps......
1 3 1
2016-03-05T18:28:39+05:30
Given :
weight of the man = 70kg
weight of the thing carried = 10kg
height of the tower = 100m

need to find out :
the work done

solution :
total weight = 70+10 = 80kg
work done = mgh
                 = 80 * 10 * 100 
                 = 80,000 J
therefore the work done = 80,000 J
0