Question

If two balls made of iron and aluminium of equal volumes are immersed in a liquid,then will they experience equal upthrust?justify the answer?
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Answer 1

Iron has higher mass than aluminium and please not the point that volume does not play any role in deciding the weight of the substance.Thus the gravitational force acting on iron will be higher compared to that of aluminium. The iron that possesses more gravitational force experiences less upthrust compared to that of aluminium. There is one more reason for this. The iron having more mass is more denser and the aluminium is less denser than iron. Objects that are lighter experience more upthrust compared to the objects that are heavier.