This is often summarized by saying that work is equal to the force acting on an object times its displacement (how far the object moves while the force acts on it). In mechanics, the work done on an object is related to the forces acting on it byį is force s is the displacement of the object. Other units include dBm, a logarithmic measure with 1 milliwatt as reference and kilocalories per hour (often referred to as Calories per hour). One unit of horsepower is equivalent to 33,000 foot-pounds per minute, or the power required to lift 550 pounds one foot in one second, and is equivalent to about 746 watts. Non-SI units of power include horsepower (HP), Pferdestärke (PS), cheval vapeur (CV) and foot-pounds per minute.
#POWER DEFINITION PROFESSIONAL#
Professional cyclists have been measured at 2000 W output for short periods of time. The power consumption of a human is on average roughly 100 watts, ranging from 85 W during sleep to 800 W or more while playing a strenuous sport. The SI unit of power is the watt, which is equal to one joule per second. The units of power are units of energy divided by time. Where W and E are, respectively, the work done or energy transferred in time t. When the rate of energy transfer or work is constant, all of this can be simplified to The instantaneous power is then the limiting value of the average power as the time interval Δt approaches zero.
The average power (often simply called "power" when the context makes it clear) is the average amount of work done or energy transferred per unit time. P is power E is energy W is work t is time. This can be modeled as an energy flow, equivalent to the rate of change of the energy in a system, or the time rate of doing work,