Posted by **Jaskson** on Sunday, September 18, 2011 at 7:37pm.

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?

- Physical Science -
**bobpursley**, Sunday, September 18, 2011 at 7:38pm
it increases slightly, due to the water height increasing slightly.

- Physical Science -
**Damon**, Sunday, September 18, 2011 at 7:39pm
Ignoring waves and pressure variations due to velocity, nothing at all. The weight of the boat displaces an equal weight of water.

- Physical Science -
**Damon**, Sunday, September 18, 2011 at 7:41pm
The water level does not go up, steady state. It is a canal, not a closed basin.

- Physical Science -
**bobpursley**, Sunday, September 18, 2011 at 7:43pm
OK, I agree with Prof Damon, if it is an open canal, water level is constant.

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