| |
Power Mathematics - The number of times a number or expression is multiplied by itself, for which the symbol is an index or exponent. For example,
 is the fourth power of x.
- Anything raised to the power of 0 is equal to 1, including 0 to the power of 0.
- Other notation used to denote x raised to the power of n, xn = x^n = x**n
Mechanical Engineering Power is defined as the rate of doing work. The SI unit of power is the watt or joules per second.  - It may also be determined by
 - where
- P = Power [Js-1 or W]
- F = Force [N]
- v = velocity [ms-1]
Conversions | 1 ft lbfs-1 | = | 1.356 W | | 1 ft lbf min-1 | = | 0.0226 W | | 1 horsepower | = | 550 ft lbfs-1 | | 1 horsepower | = | 745.7 W | | 1 ft poundal sec | = | 0.0421 W | | | | |
Examples | Family car (100PS) | 7.4x104 W | | Sun energy production | 3.9x1026 W |
See also: Brake Horse Power, Cheval Vapeur, Horsepower, Motive Power, Power to Weight Ratio, Prony, SI Units, Torque to Power, True Power.
  
Subjects:- Physics
| |
