Helium balloon

  • Thread starter xenoflauge
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  • #1
xenoflauge
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Homework Statement



balloons are required to lift 20 metric tons. the pressure of helium is 101.325kpa. temp=21.1degcelsius.

what should be the diameter of the balloon if it was spherical in shape in order to lift the weight?


Homework Equations



bouyant force??


The Attempt at a Solution



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tnx.
 

Answers and Replies

  • #2
berkeman
Mentor
63,272
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You need to show more work in order for us to help you. Tell us more about bouyant forces. What causes them? If you have an object that normally floats in water, and you hold it under water, how do you calculate the upward force that you feel from the object?
 

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