Buoyant Force in Action: Weight of Displaced Water!

[@eljison]

I love the postamble. Okay, that probably isn't a word, but it should be.

[@FlippingPhysics]

Postamble should definitely be a word. Glad you enjoyed it!

[@advancedstudy0]

I don't know why but this revelation excited me so much at 6:30
I don't care I'll say it and I'll say it proud!
THE PHYSICS WORKS AHUH AHUH THE PHYSICS WORKS!!!

[@FlippingPhysics]

Say it loud and proud!

[@julielangenbrunner9212]

Looks great! Excellent visuals (with the cylinders of water drawn in). I'm glad you stuck to it (premoistened strings included!) to make that demo happen. I wish I taught fluids! :/

[@FlippingPhysics]

You are absolutely welcome. I am glad I stuck with it as well. It was worth it in the end.

[@eljison]

Very good. Note, the negative sign is determined by the choice of the coordinate system. If you are using +y = up, that the weight of the rock points down, therefore is negative. The buoyant force points up in the +y direction, therefore is positive. The physics does not care about the coordinate system, but whenever you solve a problem, you should identify the positive and negative directions so that you know which sign to apply to each force.

[@FlippingPhysics]

Valid point. In my videos we follow the standard coordinate system, unless otherwise identified.

[@ScytheCurie]

7:47 Eureka! Nice reference to Archimedes' bath

[@FlippingPhysics]

Thanks. It was a bit subtle, but fun to put in there.

[@ActingUnit0.8]

Glorious

[@FlippingPhysics]

Thanks!

[@pintohoareau579]

Flippin physics.

[@FlippingPhysics]

agreed