(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A raft is made of 11 logs lashed together. They are 38.0 cm in diameter and 6.10 m long and has a density of 700 kg/m^3. How many 60 kg persons can the raft hold in freshwater while keeping everybody's feet dry?

2. Relevant equations

Volume immersed/Volume total = density obj/ density fluid

% immersed= density obj/ density fluid

Bouyant force = roh x V x g

P = F/A (?)

m = roh x V

3. The attempt at a solution

I have found the volume of the raft: 2.42 cubic meters

Here are my thoughts: To keep everybody's feet dry, the raft can be immersed up to 99.9%. Not sure how to use the forumla above to my advantage... Also, I can find the bouyant force of the raft. Now, I'm stuck!

Thanks in advance to all who respond :)

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# Homework Help: Buoyancy of a raft

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