Physical Science
posted by Jaskson .
A bridge in Sweden carries the Gota Canal over a highway. What, if anything happens to the load on the bridge when a boat passes across it in the canal?

it increases slightly, due to the water height increasing slightly.

Ignoring waves and pressure variations due to velocity, nothing at all. The weight of the boat displaces an equal weight of water.

The water level does not go up, steady state. It is a canal, not a closed basin.

OK, I agree with Prof Damon, if it is an open canal, water level is constant.
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