Movement Ratio

Reference data and engineering information about movement ratio for miscellaneous applications.

movementratio

Overview

Engineering reference data for Movement Ratio in miscellaneous.

$y = x \cdot k$

Multiply by conversion factor.

$y = y_1 + \frac{(x - x_1)(y_2 - y_1)}{x_2 - x_1}$

Estimate between two known points.

$p = \frac{\text{part}}{\text{whole}} \times 100\%$

Part as fraction of whole.

Common examples of simple machines include:

These devices amplify an input force (effort) to a larger output force (load).

The movement ratio (or velocity ratio) is expressed as:

$M_r = \frac{s_e}{s_l}$

where $M_r$ is the movement ratio, $s_e$ is the distance moved by the effort, and $s_l$ is the distance moved by the load.

Machine efficiency $\mu$ relates the force ratio $F_r$ to the movement ratio:

$\mu = \frac{F_r}{M_r}$

Here, $F_r$ is the force ratio, defined as the ratio of load to effort.