Minnesota Bridge collapse explanation...

I'm not an engineer but this is exactly what I thought!

For Engineers:

OBJECTIVES:

To identify the S.H.M. (Simple Harmonic Motion) as a periodic, oscillatory and vibratory movement.

To visualize a body which describes an S.H.M.

To define and identify the principle physical magnitudes which intervene in an S.H.M.

To visualize and interact with the graphs which represent these magnitudes.

To visualize the relation which exists between the S.H.M. and the Uniform Circular Movement.

*Below is a simple laboratory device used to exhibit the mechanical parameters.

*An equation to find the relevant values:

Explanation for non-technical people below: