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 spyderpunch69
  • 15-01-2019

So how did that other answer get verified?

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