Physics: Calculate the buoyant force on a 2.00-L helium balloon. (b) Given the mass of the rubber in the balloon is 1.50 g, what is the net vertical force on the balloon if it is let go

Calculate the buoyant force on a 2.00-L helium balloon.

Molly666

14.02.2022

Following are the solution to the given points:

Explanation:

In this question, some of the values are missing, that's why its solution can be defined as follows:

In point a:

Density of air $\rho_{air} =1.29 \frac{kg}{m^3}\\\\$

Density of helium $\rho_{helium} =0.178 \frac{kg}{m^3} \\\\$

The volume of the helium balloon V= 2L

$\to V= 2 \times 10^{-3}$

Formula:

$F_B = e_a V g\\\\$

$= 1.29 \times 2 \times 10^{-3} \times 9.81\\\\ = 0.0253098 \ N$

where g is the acceleration due to gravity

In point b:

$m_g= 1.5 \ g$

Formula:

$F_{net}=F_B - (m_r + \rho_h \ v )g$

$= 0.0253098 - (1.5 \times 10^{-3} + 0.178 \times 2 \times 10^{-3} \times 9.81)\\\\= 7.10244 \times 10^{-3} \ N$

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