How to Calculate Total Mass of a Person with Additional Gear?

[MegaMan64]

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

 

[tiny-tim]

Welcome to PF!

Hi MegaMan64! Welcome to PF!

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.

 

[Naty1]

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...

 

[tiny-tim]

Whaaaaaaa??

he meant volume!

 

[pmacias]

I would recommend that you consider the mass of the additional items (parachute and bag) separately from the mass of the human. You can then add all three masses together to determine the total mass. This approach allows for a more accurate representation of the overall mass and takes into account the individual masses of each item. Additionally, you may also want to consider the mass of any other equipment or gear that the person may be carrying. It is important to be as precise as possible in your calculations to ensure accurate results.