# Homework Help: Upthrust question

1. Jan 8, 2005

### Zaimeen

I found this question about upthrust

"give two conditions for the upthrust of a body to be independent upon the depth of imersion"

Any ideas?

2. Jan 8, 2005

### Gokul43201

Staff Emeritus
I have only one (and another, which is almost always assumed). What about you ?

How is the upthrust/buoyant force calculated ? What is the expression for it ?

3. Jan 9, 2005

### Zaimeen

Upthrust is calculated as follows

$$U = \rho g V$$, where $$\rho$$ is the density of the fluid,
g is the acceleration due to gravity and V the volume of the immersed body.

So, what are the conditions for the upthrust to be independent of the depth of immersion?

4. Jan 9, 2005

### Zaimeen

So Gokul43201 , any ideas?

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