- #1

ashvuck101

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## Homework Statement

To an order of magnitude, how many helium-filled toy balloons would be required to lift you off the ground? Helium is an irreplaceable resource so develop a theoretical answer rather than an experimental one.

## Homework Equations

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## The Attempt at a Solution

ok i know that 1L of helium lifts 1 gram

given that the balloon i am using is 8.8181L in volume

V=4/3pi (12.5)^3

from that i divide 81.81/weight

weight=(60000)grams

=7333.86 balloons are need

i kno that but i want to calculate this using rho and density of air etc can anyone help??