Mechanical advantage

From TCS Wiki
Revision as of 12:23, 12 June 2016 by imported>Diyazree
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search
File:Kraft umformende Einrichtungen..gif
Machines that multiply force.

Mechanical advantage (also written as MA in formulas) is the factor by which a machine multiplies force. The mechanical advantage of a machine can be used to find out how well a machine works and whether it can perform a particular job.

The mechanical advantage of a machine is the ratio of the load (the resistance overcome by a machine) to the effort (the force applied).

[math]\displaystyle{ MA = \frac{\text{output force}}{\text{input force}} }[/math]

For an ideal (without friction) mechanism, it is also equal to:

[math]\displaystyle{ MA = \frac{\text{distance over which effort is applied}}{\text{distance over which the load is moved}} }[/math]

There is no unit for mechanical advantages since the unit for both input and output forces cancel out.


Template:Physics-stub