Fluid MechanicsHard
Question
A beaker with a liquid of density 1.4 g cm-3 is in balance over one pan of a weighing machine as shown in the figure. If a solid of mass 10 g and density 8 g cm-3 is now hung from the top of that pan with a thread and sinking fully in the liquid without touching the bottom, the extra mass to be put on the other pan for balance will be:
Options
A.10.0g
B.8.52 g
C.11.75 g
D.− 1.75 g
Solution
By action − reaction, Fb is internal
So, balance weight = (m1 + m2)g.
and extra mass = 10 g
So, balance weight = (m1 + m2)g.
and extra mass = 10 g
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