Answer:
On the earth surface ,W= 4200 J
On the moon surface ,W= 672 J
Explanation:
Given that
mass of the man ,m = 70 kg
Height of the stairway ,h= 6 m
On the earth surface :
We know that acceleration due to gravity at earth ,g= 10 m/s²
The work done by man is given as
W= m g h
Now by putting the values in the above equation we get
W= 70 x 10 x 6 J
W=4200 J
On the moon surface :
The gravity on the moon ,g= 1.6 m/s²
The work done W
W= 70 x 1.6 x 6 J
W=672 J
On the earth surface ,W= 4200 J
On the moon surface ,W= 672 J
