helium balloon

xenoflauge

1. The problem statement, all variables and given/known data

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?


2. Relevant equations

bouyant force??


3. The attempt at a solution

---------

tnx.

berkeman

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?