A scale reads 140 N when a piece of iron is hanging from it. What does it read (in N) when it is lowered so that the iron is submerged in water?

Answer 1

Apparent weight = Real weight - Up thrust = Volume * Density of Iron g - Volume* Density of water * g

= 140 - (140* 1000)/ Density of Iron

Plug in value of density of Iron to get Apparent weight in water