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

A ball of mass m_b and volume V is lowered on a string into a fluid of density rho_f. Assume that the object would sink to the bottom if it were not supported by the string.

What is the tension T in the string when the ball is fully submerged but not touching the bottom?

It claims that rho_f is not needed in the part representing buoyancy

2. Relevant equations

I think it should be:

T=Fg - B

where T is the force of tension and B is the buoyancy force.

Fg=rho(object)*V*g

B=rho_f*V*g

therefore, T=mg - rho_f*V*g

how can you not use rho_f in calculating the buoyancy force?

3. The attempt at a solution

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# Homework Help: Buoyancy without density of fluid

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