Calculate the mechanical advantage of a machine given the load is 180 N and the effort is 20 N.

The mechanical advantage of a machine is the ratio of the load lifted to the effort applied.

$$\text{MA} = \frac{\text{Load}}{\text{Effort}}$$

Given Load = $180\,\text{N}$ and Effort = $20\,\text{N}$.

$$\text{MA} = \frac{180\,\text{N}}{20\,\text{N}}$$

$$\text{MA} = 9$$

The mechanical advantage is a dimensionless quantity.

The mechanical advantage of the machine is $\text{9}$.