Why does double bagging groceries work? Isn’t the second bag carrying not only the load of the groceries but also the load of the bag?
In: Engineering
The idea is that both bags are the exact same dimensions, and so the stress will be halved on each bag, as well as the weight on each handle…the equivalent of a double thickness bag, with only half the weight as before on each handle. in practice, though, if the bags are not the exact same dimension, the entire system breaks down. just putting a bag inside of the same dimensions and not using its handles is nearly worthless (the slight thickening of the bag *might* prevent some brute stress tearing), and using the handle of bags of a different size is totally useless. The system only works when the two bags are extremely similar and you use all four handles.
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