EN ET

Mechanical power


Mechanical power is the rate with respect to time at which work is done:

$$P=\frac{W}{\Delta t}$$


where,

P— mechanical power;
W— work done;
Δt— time.


Mechanical power generated by a force F on a body moving at the velocity v can be expressed as:

$$P=F \cdot v$$


where,

F— force applied;
v— velocity.


In the International System of Units (SI), the unit of power is watt (W), which is equal to one joule per second.


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