Buoyancy in liquids
There are three formulae for calculating the buoyancy suffered by an immersed object:
1. Buoyancy =
(where V = the volume of liquid displaced and = the density of the liquid displaced).
2. Buoyancy in water =
, where W is the weight of the immersed object and s is its relative density.
3. Buoyancy in a liquid =
, where W is the weight of the immersed object, s is its relative density and sl is the relative density of the liquid.
Okay so now there is only one thing to do,
Remember that the Forces Up = Forces Down
if something floats in water then B > W
but if it being held down B = W + T
If it rests on the bottom then the resultant, R = W - B
If it floats on top then
W = Vlplg
• Mixing up density and relative density
• Mixing up pressure and thrust. Thrust is a kind of force.
• Confusing mass and weight. Weight is a force.
• Not being able to use the three methods of finding buoyancy.
One more section here