Explain why an object with a larger surface area experiences greater upthrust when submerged in a fluid Explain your answer using Pressure in liquids (physics only) and upthrust.

An object with a larger surface area displaces more fluid when submerged, resulting in a greater volume of fluid exerting an upward force on it. This increased displacement leads to a larger upthrust acting on the object.

A strong answer should address (Physics only) Describe upthrust as the upward force on an object in a fluid directly. Use the context of Pressure in liquids (physics only) within Pressure and pressure differences in fluids (physics only), then state the relevant forces or motion reasoning with units where needed. The answer is correct when it names the key physics quantity, keeps force and pressure distinct, and links the conclusion back to the approved learning objective.