SSC JE Mechanical Engineering 2014 Set 1 Paper

Question : 174 of 200

Marks: +1, -0

A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury?

Solution:

Weight of metal peice = buoyant force

ρ_m.v_m.g=ρ_{\Hg}×v_\f×g

7×1000×v=13.6×1000×v_\f

v_\f=7/13.6\ \v

v_\f= 0.515\ \v

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