In the Buoyancy lab, you suspended various metal objects from a force sensor and compared their weight when suspended in the air and under water. Suppose you have a cube of iron, and you hang it from your force sensor, and it reads 48.7 N when the iron is not submerged. If the density of iron is 7,874 kg/m', what would the force sensor read (in Newtons) if the iron was weighed underwater