Physics
A balloon filled with helium gas floats in a big closed jar which is connected to an evacuating pump. What will be your observation, if air from jar is pumped out? Explain your answer.
Fluids Upthrust
27 Likes
Answer
When air from jar is pumped out the balloon will sink.
As air from jar is pumped out, the density of air in jar decreases, so upthrust on balloon decreases, hence the weight of balloon exceeds the upthrust on it and the balloon sinks.
Answered By
19 Likes
Related Questions
Why is floating ice less submerged in brine than in water?
Figure shows the same block of wood floating in three different liquids A, B and C of densities ρ1, ρ2, and ρ3 respectively. Which liquid has the highest density? Give reason for your answer.
A block of wood is so loaded that it just floats in water at room temperature. What change will occur in the state of floatation, if
(a) some salt is added to water,
(b) water is heated?
What is center of buoyancy? State it's position for a floating body with respect to the centre of gravity of body.