Physics
Mechanical power
The same relationship for steady motion, since work is force times distance and distance over time is velocity.
The Formula
P = F x v
The same relationship for steady motion, since work is force times distance and distance over time is velocity.
| Symbol | Meaning | Unit | Notes |
|---|---|---|---|
| F | Force applied | newtons | In newtons. 600 N moving at 0.5 m/s delivers 300 W. |
| v | Velocity | metres per second | In metres per second. The speed the force is applied against. |
What Each Symbol Means
Fnewtons
Force applied
In newtons. 600 N moving at 0.5 m/s delivers 300 W.
vmetres per second
Velocity
In metres per second. The speed the force is applied against.
See It Worked With Real Numbers
A formula on its own does not tell you which number goes where. The how to calculate power page applies this equation to a concrete case, shows every intermediate step, and names the mistakes that produce a wrong answer even when the algebra is right.
Where This Formula Appears
This equation is the working core of How To Calculate Power, filed under Science. Every number the guide produces comes from substituting into this one line.