A metal piece of mass 160g lies in equilibrium inside a glass of water .The piece touches the bottom of the glass at a small number of point. If the density of the metal is 8000 kg/m3, find the normal force by the bottom of the glass on the metal.

Asked by M.s.srinidhi21 | 19th Oct, 2014, 05:02: PM

Expert Answer:

Given mass of the metal piece, m = 160 g = 0.160 kg
Density of metal = 8000 kg/m3
Here we can say that the weight of the metal piece = buoyant force(FB) + Normal force
i.e. weight of the metal piece= mg
Buoyant force, FB = Volume of water displaced by metal ×ρwater x g
mg = FB + Normal force
 
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Answered by Jyothi Nair | 20th Oct, 2014, 10:05: AM