#12 | Solved Problems: Set 1
(Physics) > Mechanical Properties of Fluids
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Two bodies are in equilibrium when suspended in water from the arms of a balance. The mass of one body is 36 g and its density is 9 g / cm3. If the mass of the other is 48 g, its density in g / cm3 is 
(a)43                                         (b) 32
(c) 3                                           (d) 5

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An ice berg of density 900 Kg/m3 is floating in water of density 1000 Kg/m3. The percentage of volume of ice-cube outside the water is 
(a) 20%                                       (b) 35%
(c) 10%                                       (d) 25%

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A log of wood of mass 120 Kg floats in water. The weight that can be put on the raft to make it just sink, should be (density of wood = 600 Kg/m3
(a) 80 Kg                                                 (b) 50 Kg
(c) 60 Kg                                                  (d) 30 Kg

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A metallic block of density 5 gm cm-3 and having dimensions 5 cm × 5 cm × 5 cm is weighed in water. Its apparent weight will be
(a) 5 × 5 × 5 × 5 gf                            (b) 4 × 4 × 4 × 4 gf
(c) 5 × 4 × 4 × 4 gf                            (d) 4 × 5 × 5 × 5 gf

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A cubical block is floating in a liquid with half of its volume immersed in the liquid. When the whole system accelerates upwards with acceleration of g/3, the fraction of volume immersed in the liquid will be

(a) 12                                  (b) 38

(c) 23                                  (d) 34

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