What is meant by Power
A measure of the rate of work done
What is the equation for power
P = W/t
Give 2 units for Power
What is the equation for power for motion under constant speed
P = Fv
Derive P = Fv
P = W/t = Fd/t = Fv
What is meant by the efficiency of a mechanical system
What is the equation for efficiency in terms of work/energy
Efficiency = 100 x useful energy output/ total energy input
What is the equation for efficiency in terms of power
Efficiency = 100 x useful power output/ total power input