A piece of iron weighs 44.5 gf in the air. If the density of iron is $8.9 \times 10^{3} k g m^{- 3}$ , find the weight of iron piece when immersed in water.

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A piece of brass weighs 175g in air and 150g when fully submerged in water. The density of water is 1.0gcm−3. Why does the brass piece weight less in water?

The correct option is B Due to upthrustThe brass piece weigh less in water due to the upthrust that the brass experiences when it is immerged in water. This upthrust helps the body to float.Apparent weight of the body immersed in water Wapp= True weight in air − Upthrust

A piece of brass weighs $175 g$ in air and $150 g$ when fully submerged in water. The density of water is $1.0 g c m^{- 3}$ . Why does the brass piece weight less in water?

The correct option is B Due to upthrust
The brass piece weigh less in water due to the upthrust that the brass experiences when it is immerged in water. This upthrust helps the body to float.
Apparent weight of the body immersed in water $W_{a p p} =$ True weight in air $-$ Upthrust