A bucket of water is hung from a springbalance. A piece of iron is suspended inthe water without touching the sides ortouching the bottom of the bucket. Thereading of the spring balanceA) will increaseB) will decreaseC) does not changeD) varies with the increase ofdepth of the immersion of the ironpiece

A bucket of water is hung from a springbalance. A piece of iron is sus

1.	A bucket of water is hung from a springbalance. A piece of iron is suspended inthe water without touching the sides ortouching the bottom of the bucket. Thereading of the spring balanceA) will increaseB) will decreaseC) does not changeD) varies with the increase ofdepth of the immersion of the ironpiece
Answer» When the piece of iron is lowered into the water, the water level in the bucket increases. And so the pressure at the bottom of bucket also increases. Thus the total thrust at the botto also increases. Therefore the spring balance reading increases.