- #1
farolero
- 166
- 10
theres one beam of wood of density 0.5 floating on water of density one
the beam is vertical and i assume it will go to horizontality
this force that moved the wood beam implies a work has been done and hence potential energy has been spent
but if the beam has density 0.5 it means it has the same volume underwater than over water either horizontally or vertically hence its cog hasnt varied height and on the same manner the level of water remains in the same level with respect to the cog of the beam of wood
so from where comes the potential gravitational energy that has applied the work on the wood to move it from vertically floating to horizontally floating
my conclusion from this thought experiment is that a 0.5 density beam will float indiferently horizontally or vertically to kep conservation of energy true
is this correct?
the beam is vertical and i assume it will go to horizontality
this force that moved the wood beam implies a work has been done and hence potential energy has been spent
but if the beam has density 0.5 it means it has the same volume underwater than over water either horizontally or vertically hence its cog hasnt varied height and on the same manner the level of water remains in the same level with respect to the cog of the beam of wood
so from where comes the potential gravitational energy that has applied the work on the wood to move it from vertically floating to horizontally floating
my conclusion from this thought experiment is that a 0.5 density beam will float indiferently horizontally or vertically to kep conservation of energy true
is this correct?