Puzzles/Physics puzzles/A boat, a pool, and a lead ball

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Puzzles | Physics puzzles | A boat, a pool, and a lead ball

There's a boat floating in a pool. First, you place the (large) ball of lead in the boat, and measure the water's level. Then, you take the ball out and drop it into the pool, and measure the water's level again. Assuming the boat doesn't sink from the lead ball being in it, during which measurement will the water's level be higher?

Solution