A lift requires 300J to complete 2m of vertical distance aka height. We must find force exerted by a girl on the object that was lifted 2m vertically.
So we divide.
[tex]F=\dfrac{W}{h}=\dfrac{300\mathrm{J}}{2\mathrm{m}}=150\mathrm{N}[/tex]
Hope this helps.
Answer: The force applied by the girl is 150 N
Explanation:
Work is defined as the force that is causing the movement or displacement of an object.
Mathematically,
[tex]W=F\times d[/tex]
where,
W = work done by the girl = 300 J
F = Force applied by the girl = ?
d = displacement = 2 m
Putting values in above equation, we get:
[tex]300J=F\times 2m\\\\F=\frac{300J}{2m}=150N[/tex]
Hence, the force applied by the girl is 150 N
