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 Power (mechanical)
Power is physical work carried out in a certain amount of time. In the below formilae it is given in Nm/s. This is exactly the unit for one Watt, named after James Watt, who
made the steam-engine suitable for industrial use. 736 Watts are equal to 1 hp, the old unit of horsepower, which was also invented by him. An interesting fact is that nowadays, for a short period, a horse can produce
quite a bit more than 2 hp. In 1765 however, James Watt probably meant the continuous performance of mine-horses for a period of up to more than 10 hours.
F·s
P=
t |
F·s
t=
P | P·t
F=
s | P·t
s=
F |
W
P = 
t |
W = P · t | W
t =
P |
P = F · v | P
F =
v | P
v =
F |
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Translator: Don Leslie -
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