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

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  

Density of helium

The volume of the helium balloon

Formula:

where g is the acceleration due to gravity

In point b:

Formula:

we need to know the time interval during which the force acts. impulse of force = momentum change