Answer:
Power required, P = 0.49 kW
Explanation:
It is given that,
Mass of drum, m = 150 kg
Height, h = 20 m
Time, t = 1 min = 60 sec
Average power required is given by work done divided by total time taken. It is given by :
[tex]P=\dfrac{W}{t}[/tex]
W = F.d
Here, W = mgh
So, [tex]P=\dfrac{mgh}{t}[/tex]
[tex]P=\dfrac{150\ kg\times 9.8\ m/s^2\times 20\ m}{60\ s}[/tex]
P = 490 watts
or P = 0.49 kW
So, the average power required to raise the drum is 0.49 kilo-watts. Hence, this is the required solution.
