physics ---- really dnt get this at all
posted by ashley --- HELP PLEASEE!!! on .
A small electric motor is used to lift a
0.50-kilogram mass at constant speed. If the
mass is lifted a vertical distance of 1.5 meters in
5.0 seconds, the average power developed by the
See if any of the following links will help:
change in potential energy = m g h
energy/time = power = m g h /t
= .50 * 9.81 * 1.5 / 5
Joules/second or Watts
calculate the power out in watts and horse power of an 80 kg man that climbs a flight of stairs 5.8m high in 4.0s.