I have two homework problems that I am unable to answer related to buoyancy/force. Please help! Thanks!(adsbygoogle = window.adsbygoogle || []).push({});

1. How much force (in Newtons) does it take to hold a 100kg man completely under water in the ocean? His density is 903 kg/m^3, and the specific gravity of sea water is 1.07.

They give the following hint: Buoyant force is greater than the weight: B.F. = Weight + Force Down

2. What is the buoyant force in N on a 6.6 m^3 helium balloon in air at standard conditions? The density of air is 1.3 kg/m^3

They give the following hint: According to Archimedes you only need to know the weight of the air displaced.

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# Homework Help: Need help answering problems related to Buoyance/Buoyance Force

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