The formula for each simple machine by getting work exerted machine is:

1. Lever:

Work Input (Input Force x Input Distance) = Work Output (Output Force x Output Distance)

Formula: WI = WO

or: IF x ID = OF x OD

2. Inclined Plane:

Work Input (Input Force x Input Distance) = Work Output (Output Force x Output Distance)

Formula: WI = WO

or: IF x ID = OF x OD

3. Pulley:

Work Input (Input Force x Input Distance) = Work Output (Output Force x Output Distance)

Formula: WI = WO

or: IF x ID = OF x OD

4. Wheel and Axle:

Work Input (Input Force x Input Distance) = Work Output (Output Force x Output Distance)

Formula: WI = WO

or: IF x ID = OF x OD

5. Wedge:

Work Input (Input Force x Input Distance) = Work Output (Output Force x Output Distance)

Formula: WI = WO

or: IF x ID = OF x OD

6. Screw:

Work Input (Input Force x Input Distance) = Work Output (Output Force x Output Distance)

Formula: WI = WO

or: IF x ID = OF x OD