Physics (AS & A Level) · Oct / Nov 2021 · Paper 11 · Question 11

A uniform solid block is fully submerged in a tank of water. The dimensions of the block are x and y, as shown. The block is held vertically in the position shown. The density of the block is the same as the density of the water. If the block is always held at the same depth d below the surface of the water, which single change would increase the magnitude of the upthrust force on the block?

1. Adecrease the density of the block
2. Bhold the block horizontally
3. Cincrease dimension y
4. Dincrease the density of the block

As printed in the paper