An iron block and a wooden block are positioned in a vessel containing water as shown. The iron block (1) hangs from a massless string attached to a rigid support from above, while the wooden block (2) floats while tied to the bottom by a massless string. If the vessel starts accelerating towards the right, which statement(s) are correct? Image
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Question

An iron block and a wooden block are positioned in a vessel containing water as shown. The iron block (1) hangs from a massless string attached to a rigid support from above, while the wooden block (2) floats while tied to the bottom by a massless string. If the vessel starts accelerating towards the right, which statement(s) are correct? Image

Select all that apply

G1 Physics · Accepted Answer

Step 1: In the accelerating vessel, the effective gravity is 𝐠eff = 𝐠 − 𝐚, so the liquid pressure gradient and buoyant force are along 𝐠eff. Step 2: The denser iron block tends to align its apparent weight opposite to buoyancy and deflects to the left, while the lighter wooden block tied to the bottom deflects to the right. Correct answers: B, C.