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Chapter 5 Upthrust In Fluids Archimedes Principle And Floatation | Exercise 5C

Question 12

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 the jar is pumped out? Explain your answer

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The balloon will sink.

The density of air in the jar decreases as the air is pumped out from the jar. Hence the upthrust on the balloon decreases. The balloon sinks as the weight of the balloon surpasses the upthrust acting on it

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Our top 5% students will be awarded a special scholarship to Lido.

subject-cta

Question 12

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 the jar is pumped out? Explain your answer

Looking to do well in your science exam ? Learn from an expert tutor. Book a free class!

The balloon will sink.

The density of air in the jar decreases as the air is pumped out from the jar. Hence the upthrust on the balloon decreases. The balloon sinks as the weight of the balloon surpasses the upthrust acting on it

Our top 5% students will be awarded a special scholarship to Lido.

subject-cta
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