Answer:
[tex]P=180W[/tex]
Explanation:
Given:
h = 5m
mg =720N
To calculate the workdone using the formula
W = mgh
Where W is the workdone
"m" is the mass of the man
"h" is the distance covered
Weight of the man = mg = 720N
where "g" is the Acceleration due to gravity
"m" is the mass of the man
Substitute the value of "h" and "mg"
W = 720 × 5 = 3600J
To calculate the power
[tex]P=W/t[/tex]
Where W= 3600W
t = time taken = 20s
P = 3600/20
[tex]P=180W[/tex]
