Answer:
The second option has a lower power output. P=30 W
Explanation:
Mechanical Power
It is a physical magnitude that measures the rate a work W is done over time t.
[tex]\displaystyle P=\frac{W}{t}[/tex]
Since W=F.d
[tex]\displaystyle P=\frac{F.d}{t}[/tex]
The first option means the worker will lift the box by a distance of 1.2 meters in 3 seconds by applying 250 N of force. That produces a power of
[tex]\displaystyle P=\frac{(250). (1.2)}{3}=100\ Watt[/tex]
The second option requires the worker applies 75 N of force and travel a distance of 4 meters for 10 seconds, thus the power is
[tex]\displaystyle P=\frac{(75). (4)}{10}=30\ Watt[/tex]
The second option has a lower power output
