Mechanical Power
Power in mechanical systems is the combination of forces and movement. In particular, power is the product of a force on an object and the object's velocity, or the product of a torque on a shaft and the shaft's angular velocity.
Mechanical power is also described as the time derivative of work. In mechanics, the work done by a force F on an object that travels along a curve C is given by the line integral:
where x defines the path C and v is the velocity along this path. The time derivative of the equation for work yields the instantaneous power,
In rotational systems, power is the product of the torque τ and angular velocity ω,
where ω measured in radians per second.
In fluid power systems such as hydraulic actuators, power is given by
where p is pressure in pascals, or N/m2 and Q is volumetric flow rate in m3/s in SI units.
Read more about this topic: Power (physics)
Famous quotes containing the words mechanical and/or power:
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—G.C. (Georg Christoph)
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—Apocrypha. 1 Esdras, 4:41.
Acclamation following the speech of the bodyguard of King Darius, who proclaimed the power of truth, “the strength, kingdom, power, and majesty of all ages.”