33. A piece of metal, mass 3.6 kg is suspended from a spring balance. What is the reading of the balance (in N) (a) with the metal in air? (b) with the metal in water? (c) with the metal in brine? and (d) what is the density of a liquid in which it gives a reading of 33N? (Density of brine 1200 kgm', density of metal = 9000 kgm'¹).
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