Topic 20 - work done and power Flashcards
1
Q
when is work done
A
when a force moves an object through a distance, WORK IS DONE, on the object and ENERGY IS TRANSFERRED
2
Q
what is the equation for work done
A
work done=force x distance OR
E = F X D
3
Q
what is the equation for efficiency
A
efficiency = useful energy transferred by device / total energy supplied by device
4
Q
what is the equation for power
A
power = work done / time taken
