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Figure Q.13.33 shows a 100 g block of copper (ρ = 8900 kg/m3) and a 100 g block of aluminum (ρ 2700 kg/m3) connected by a massless string that runs over two massless, frictionless pulleys. The two blocks exactly balance, since they have the same mass. Now suppose that the whole systemis submerged in water. What will happen?
Figure Q13.33
A. The copper block will fall, the aluminum block will rise.
B. The aluminum block will fall, the copper block will rise.
C. Nothing will change.
D. Both blocks will rise.
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