Work & Energy

What is work done (Newton-metre) equal to?

Energy transferred (Joules), therefore 1Nm = 1J

What are the two types of work done?

1. A force acting over a distance (mechanical transfer pathway)

2. Flow of charged particles (electrical transfer pathway)

What happens when an object is in equilibrium?

The forces acting on the object are balanced

Why is work done on an object?

To cause a change in its motion

Work done (J) =

Force (N) x distance (m) ( distance is in the direction of the force applied)

E =

F x d