Water level change when adding model boat · CAP 2013 #16
Physics · fluid-mechanics
Problem
A girl sitting on a floating mattress in a small pool holds a model of a motorboat in her hands. When she puts it in the water to start driving it with her remote control, what happens to the water level in the pool?
a) It rises by a small amount.
b) It drops by a small amount.
c) It stays the same.
d) The qualitative result depends on the weight of the model boat.