A balloon made of a plastic of negligible mass is filled with a gas of density 1.7 ρair to a volume V?
A balloon made of a plastic of negligible mass is filled with a gas of density 1.7 rho(air) to a volume V . The balloon is hung from the ceiling by a thread.
What is the tension of the thread?
Update:That was absolutely right thank you.
More Questions From This User See All
Answers & Comments
Verified answer
weight of gas
= 1.7 ρ * V * 9.81
floatation by air
= V * ρ * 9.81
tension of the thread
= 1.7 ρ * V * 9.81 - V * ρ * 9.81
= V * ρ * 9.81 * 0.7
= 6.867 ρV
answer
where ρ is the density of air