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Problem on Elasticity

bolbona7
in Classical Physics

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A plank is fixed between two rigid supports. A load of 50lb is placed at the midpoint of the plank and it bends by 2 inch. How much will it bend if a load of 75lb is placed at the same position? How much load is required to bend it by 3.5 inch?

This sounds like homework? It looks like you are to treat the plank as a spring - look up Hookes's Law. http://en.wikipedia.org/wiki/Spring_(device).

Then click on "did you mean spring (device)".

If its a beam bending problem that is more difficult - but I think a plank is more like a spring than a beam.

Edited by TonyMcC

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