Mechanical Formulas

Mechanical Reasoning Formulas are a must know if you plan on taking a mechanical reasoning test. I have laid out some basic, must know formulas that will help you succeed your next reasoning test.


The first formula we will cover is volume.

The formula for volume is as follows:

Volume(V)= Base x Height (h)
V  = πr2  x h

The second need to know formula is for those leverage questions. I know we have already covered this in another area of the website but for simplicity and easy access I will add it here as well. You can have a look at our lever page here.

The formula for leverage is as follows:

Weight(W) x Distance (D1) = Force (F) x Distance (D2)

W =  Weight

D1 = Distance from fulcrum to weight

F=    Force required

D2= Distance from fulcrum to force point

Important mechanical formula number three would be the inclined plane. The inclined plane is a slanted surface connecting a lower point to an upper point.

The formula for an incline plane is as follows:

Length of inclined plane / Height of inclined plane = mechanical advantage (MA)

It’s also fairly common that you will see a common screw in your mechanical reasoning test. Essentially, a screw is a cylinder with an inclined plane wrapped around it. In this instance, you would have to use a different formula.

Effort x Effort Distance (Circumference) = Resistance x Resistance distance (Pitch)

I’m sure you noticed that there are no examples or explanations shown on this page. This is strictly a formulas page. If you need examples, please be sure to sign up for our free eBook and our free sample questions.

Also, check out our Mechanical Aptitude Highlight Series. It has many GREAT examples to help you pass your mechanical aptitude test!


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