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:
“There is only one evil, to deny life
As Rome denied Etruria
And mechanical America Montezuma still.”
—D.H. (David Herbert)
“If you look at history you’ll find that no state has been so plagued by its rulers as when power has fallen into the hands of some dabbler in philosophy or literary addict.”
—Desiderius Erasmus (c. 1466–1536)