A beaker of mass 1.2 kg containing 2.3 kg of water rests on a scale. A 3.1 kg block of a metallic alloy of density
4700 kg/m3 is suspended from a spring scale and is submerged in the water of density 1000 kg/m3. What does the hanging scale read? The acceleration of gravity is 9.8 m/s2 .
Answer in units of N.