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Through Engineers’ Eyes

You are on your way towards gaining ‘engineers’ eyes’.
This short video explains what you have encountered and what is to come.

This quick video highlights your progress towards Engineers Eyes. The concept wheel shows how it all fits together.

Week 2 concept wheel highlighting: Forces revealed (free body diagrams), force as a vector, components/resultants, equilibrium (forces at a point) Week 2 concept wheel (Click to expand)

Are forces just a figment of our imagination? If so, they are a very useful one, for example we use forces to explain why an elastic band stretches when you load it.

When you draw a Free Body Diagram, you have to replace the interaction that the object previously had with its surroundings by force arrows. This reveals the forces.

You learnt that force is a vector, and you used trigonometry to split a force vector into components, or combine forces into a resultant.

Your next concept was equilibrium (Newton’s first law). By combining equilibrium with Free Body Diagrams and trigonometry you could find unknown forces – forces in the cables that support a loudspeaker in fact. A very practical application.

You’ve covered a lot of territory. But so far only forces that meet at a point. Next week (Week 3) will introduce twist. It’s useful in its own right but in Week 4 it will complete the toolkit for analysing two-dimentional rigid bodies where forces don’t meet at a point.

Talking points

These are to get you started. Share any other thoughts you’ve had.

  • Do you see how the three phases – experiment, analysis and design – combine to help you develop engineers’ eyes?

Share your experiments

Don’t forget to share your experiments on the Through Engineers’ Eyes Padlet wall for this week.

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Through Engineers' Eyes - Introducing the Vision: Engineering Mechanics by Experiment, Analysis and Design

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