He lifted the box as high as 1.2 m (B).
Hi ! In this question, I will help you. Work is the amount of force exerted to cause an object to move a certain distance from its starting point. In physics, the amount of work will be proportional to the increase in force and increase in displacement. Amount of work can be calculated by this equation :
[tex] \boxed{\sf{\bold{W = F \times s}}} [/tex]
With the following condition :
Now, because in this question, the "s" is a displacement that proportion to the change of altitude of the objects. So, the "s" can be written as "∆h* (altitude change). The formula can also be changed to:
[tex] \boxed{\sf{\bold{W = F \times \Delta h}}} [/tex]
With the following condition :
We know that :
What was asked :
Step by step :
[tex] \sf{W = F \times \Delta h} [/tex]
[tex] \sf{120 = 100 \times \Delta h} [/tex]
[tex] \sf{h = \frac{120}{100}} [/tex]
[tex] \boxed{\sf{h = 1.2 \: m}} [/tex]
He lifted the box as high as 1.2 m (B).
