Machine, Work, and Force.

A machine is something that makes the force less which makes the work easier. To make the force easier you have to work with the mechanical advantage. E.g.

If the distance is twice as much than my force will be twice as less.
Work is moving a weight from one place to another.

Work is force X distance
W= FxD
1 Joule= NxM
e.g. 40kg X 10m/s
= 400N
Work = Force x Distance
=400Nx1meter = 400Joules

Work= 400Nx3m =1200 joules
1200 joules= Fx12 (divided by 12 divided by 12)
F= 100n