FE practice exam Q56

GregLocock · Jan 6, 2021

It seems to me the plug and chug answer is wrong, they should have used an energy balance 1/2*k*x^2=1/2*m*v^2 and got the answer A. They've assumed constant acceleration. I've checked it two ways, pity they didn't.

Cheers

Greg Locock

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dvd · Jan 6, 2021

I like the energy approach. No mention made of orientation - sketch shows horizontal, but...

3DDave · Jan 6, 2021

That's disturbing. You apparently inked in the errata fix.

For further info:

https://ncees.org/wp-content/uploads/FE-Other-Disciplines-Errata_04-2_10-20-2020.pdf

csk62 · Jan 6, 2021

Quite a few NCEES problems are awful in my opinion, one immediately comes to mind on the practice PE exam. There are actually a few errors in the PE formula handbook as well on something as simple as beams. Just took the PE exam last month and the questions seemed better than the FE exam at least.

I like the energy approach on this one.

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Not making a decision is a decision in itself

GregLocock · Jan 6, 2021

What interests me is that they've actually worked out the correct approach - A is the right answer.

Cheers

Greg Locock

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FE practice exam Q56

GregLocock

Automotive

dvd

Mechanical

3DDave

Aerospace

csk62

Mechanical

GregLocock

Automotive

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