roccstar987 roccstar987

24-06-2015
Health

contestada

What type of force does a backpack exert on the body’s back and hips?

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HistoryGuy HistoryGuy

29-06-2015

The backpack's main force that it it is exerting on the body's back and hips is coming from gravity, and can pull the spine downwards. This is why it's important to ear both straps.

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spyderpunch69 spyderpunch69

15-01-2019

So how did that other answer get verified?

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