Question: A thin rod, with length l =0.3 m , cross section S and density rho =500 kg / m 3 , is fixed at

 A thin rod, with length l =0.3 m, cross section S and density rho =500 kg/m3 
, is fixed at 

 its end O to the wall of a vessel filled with water (rho 0=1000 kg/m3 
 
) as shown in Figure 
 
 2. The rod can rotate freely around a horizontal axis passing through O and directed 
 
towards the reader. In equilibrium, the part of the rod that remains outside the water
 
 has a length d. Calculate the value of d. 
 

 A thin rod, with length l =0.3 m, cross section S and density rho =500 kg/m3 , is

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