Question

An Archimedean screw is a screw within a closely fitting cover, so that water can be raised when the screw is turned. Suppose the screw has a mechanical advantage of 12.5. If the screw is turned several times, so that the input distance is 15.7 m, how much has water been lifted upward by the screw (output distance)?

Answer 1

$$MA=\frac{d_{in}}{d_{in}}\to 12.5=\frac{15.7}{d_{in}}$$

$$d_{in}=1.26\ m$$