Answer:
The ideal mechanical advantage (IMA) is [tex]4[/tex].
Step-by-step explanation:
The ideal mechanical advantage is the ratio of length of longer lever [tex]L_e[/tex] to that of shorter lever [tex]L_r[/tex]
IMA [tex]\frac{L_e}{L_r}[/tex]
Please refer to the image attached.
We could see that the the resistance load moves [tex]10\ cm[/tex] cm towards the fulcrum so the distance of resistance load from fulcrum [tex]= (20-10) =10\ cm[/tex]
Now the as the effort force moves [tex]40\ cm[/tex] towards the fulcrum overall distance from the fulcrum to the effort force (load) [tex]=(80-40)=40\ cm[/tex]
Plugging the values of the distances in IMA formula we can have.
IMA [tex]=\frac{(80-40)}{(20-10)} =\frac{40}{10} =4[/tex].
So the IMA of the fulcrum (simple machine) [tex]= 4[/tex]
