And Then She Said...
New member
A balloon with radius .13 m is filled with helium, density 0.177 kg/m^3. Density of surrounding air is 1.29 kg/m^3.
I already determined the volume of he balloon is 9.20e-3 m^3, and the net force on the balloon (neglecting the weight of the balloon material) is 0.100 N.
How many identical ballons would be needed to lift a child of mass 23.0 kg?
I already determined the volume of he balloon is 9.20e-3 m^3, and the net force on the balloon (neglecting the weight of the balloon material) is 0.100 N.
How many identical ballons would be needed to lift a child of mass 23.0 kg?