Buoyancy and gravity

[TheOldDog]

As I showed in post #23, changing to mass actually made it more complicated because when formulated as a mass equivalence Archimedes principle can be violated in a non-uniform gravitational field, whereas formulated in terms of weights it always works.

For my example the water and the boat experience the same gravity.

 

[haruspex]

50 yrs ago that's what we did in school. When we used mass it was in grams, when we used weight it was in pounds.

Bizarre. But you understand now that one should use
- pounds mass for mass and pounds force for weight ,
- or kg for mass and Newtons for weight,
- or g for mass and dynes for weight…
right?