- #1
abcd1230
- 4
- 0
BALLOON PROBLEM. please please help :)
I need to find the volume of a helium balloon, and 9 paperclips can sit on it so it doesn't float away (.004kg). Density of He=.18; density of air=1.29; mass of balloon=.0116kg.
Free body sum of equations:
Fy=Fb-W(He)+W(balloon)+(Wpaperclip)=0
using the equation above, I first isolated Fb, then I got:
Fb=(.18)(vHe)+(.0116)(g)+(.004)(g)
Fb=p(fluid)v(disp)g=(.18)(vHe)+(.0116)(g)+(.004)(g)
I don't know if this is right. And i don't understand if you solve for Vhe or Vdisp because aren't they the same things.
Homework Statement
I need to find the volume of a helium balloon, and 9 paperclips can sit on it so it doesn't float away (.004kg). Density of He=.18; density of air=1.29; mass of balloon=.0116kg.
Homework Equations
Free body sum of equations:
Fy=Fb-W(He)+W(balloon)+(Wpaperclip)=0
The Attempt at a Solution
using the equation above, I first isolated Fb, then I got:
Fb=(.18)(vHe)+(.0116)(g)+(.004)(g)
Fb=p(fluid)v(disp)g=(.18)(vHe)+(.0116)(g)+(.004)(g)
I don't know if this is right. And i don't understand if you solve for Vhe or Vdisp because aren't they the same things.
Last edited: