AskRose.org
Email a Tutor
Home > Student Resources > Energy and Power

Energy and Power

A forklift raises a load of 500 kilograms by 50 meters in 4.0 seconds at a constant velocity.

Given:

  • m\ =\ 500\ kg
  • h\ =\ 5.0\ m
  • t\ =\ 4.0\ s

Find:

  • Power\ =\ ?

Power is an amount of energy per time.

1\ watt\ =\ 1\ \frac{Joule}{second}

P\ =\ \frac{w}{t}

P\ =\ \frac{F\times h}{t}

P\ =\ \frac{m\times g\times h}{t}

P\ =\ \frac{(500kg)(9.80\frac{m}{s^2})(5.0m)}{4.0s}

P\ =\ 6125\ W

P\ =\ 6.125\ kW