Mass of person with stuff

  • Thread starter MegaMan64
  • Start date
  • #1
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What I have now if the mass of a human found by this
m = density x velocity
which is 189.16lb or 85.79 kg for about 175lb person.
density = 1010 kg/m3
volume = 3ft^3
but then I thought that this guy will have about 200 extra lbs of wight and a parachute along with that. How should I go about putting that into the mass?
The bag would be about 2ft * 2ft *1ft = 4ft^3 so the
mass of the pack would be about 200lb roughly?
and the parachute would be about 50lb too.
Should I just add the human mass to the other two masses for a total mass? Or am i missing something?
Thanks
 

Answers and Replies

  • #2
tiny-tim
Science Advisor
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Welcome to PF!

Hi MegaMan64! Welcome to PF! :wink:
Should I just add the human mass to the other two masses for a total mass?
Yes, if they all have the same velocity, it's easier and quicker to treat them as a single mass. :smile:
 
  • #3
5,601
40
What I have now if the mass of a human found by this
m = density x velocity
Whaaaaaaa???????

That doesn't lead to the units on the following line in your post...
 
  • #4
tiny-tim
Science Advisor
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