Resistance force

In physics, resistance force is the force which an effort force must overcome in order to do work on an object via a simple machine. Resistance force, like most other forces, is measured in newtons or in pounds-force.

For an ideal (frictionless) mechanism in which no energy is lost, resistance force obeys the equation

$R\times D_{R}=E\times D_{E}$

where:

R equals resistance force

D_R equals resistance distance

E equals effort force

D_E equals effort distance

Resistance force is used to calculate the work output using the following equation:

$Work\,output=R\times D_{R}$

See also

• Drag (physics)

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