$($a$)$

Calculate the buoyant force $($in N$)$ on a $2\mathrm{.}30$ L helium balloon.

Incorrect: Your answer is incorrect.

N $($upward$)$

$($b$)$

Given the mass of the rubber in the balloon is $2\mathrm{.}00$ g$,$ what is the net vertical force $($in N$)$ on the balloon if it is let go$?$ You can neglect the volume of the rubber.

Incorrect: Your answer is incorrect.

N $($upward$)$