Power or Mechanical Power
"rate of doing work"
"rate of doing work"
or
or
" rate of using energy "
" rate of using energy "
Power = Work / Time = Energy / Time
Power (P): Unit - Watt
Work (W) | Energy (E): Unit - Joule
Time (t): Unit - sec
Questions:
Questions:
How long does it take to do 432 joules of work with 75 watts of power?
How much power is required to do 110 J of work on an object in a time of 0.4 s? How much power is required if the same work is done in 5 s?