Question bank/JEE Main/Physics

JEE MainPhysicsModerateMechanical properties of liquid

A block is partially immersed in a liquid and the vessel is
accelerating upwards with acceleration "a". The block is observed by two

observers
O1O_{1} and O2O_{2}one at rest and the other accelerating with
an acceleration "a" upward. The total buoyant force on the block is:,d CykWd nzo:i ls Mqck gqvk gS rFkk ik= Roj.k "a" ls,d izs{kd fojke ij gS rFkk nwljk Roj.k"a" ls dh vksj Rofjr

gSA CykWd ij dk;Zjr~ dqy mRIykou cy gksxkA

Show answer and solution
Buoyant force mRIykou
cy
=Fb=Vsub⋅ρl⋅g= F_{b} = V_{sub} \cdot \rho_{\mathcal{l}} \cdot g
Where,
Vsub,ρlV_{sub},\rho_{\mathcal{l}}and g all are same w.r.t.
O1O_{1}andO2O_{2}
Hence vr (1)

Source: Grass-G / Ph-26 Physics paper 1 15 Jan.docx

Need a video for this idea?

Scan any doubt from your notes and get a whiteboard explanation.