Option B: 0.20
An ideal machine is where there is not friction or the same amount of effort put on the machine is wasted to overcome friction. IMA stands for Ideal Mechanical Advantage. For a lever system, it can be calculated using the following formula:
[tex]IMA=\frac{Effort distance}{resistance distance}[/tex]
Here, resistance distance corresponds to the length of the whole ramp,
[tex]length of ramp=\left (1.2+0.3 \right )=1.5m[/tex]
Thus, resistance distance is 1.5 m
And the effort distance is 0.3 m
On putting the values in the fromula:
[tex]IMA=\frac{0.3 m}{1.5 m}=0.20[/tex]
Therefore, IMA for the liver system is 0.20.
