A ferry boat loaded with rocks has to pass under a bridge. The maximum height of the rocks is slightly more than the height of the bridge so that the boat just fails to pass under the bridge. Should some of the rocks be removed or some more rocks be added?

A ferry boat loaded with rocks has to pass under a bridge. The maximum

1.	A ferry boat loaded with rocks has to pass under a bridge. The maximum height of the rocks is slightly more than the height of the bridge so that the boat just fails to pass under the bridge. Should some of the rocks be removed or some more rocks be added?
Answer» Some more rocks should be added to the ferry boat. It will increase the weight of the boat and to balance it more water in the river would be displaced. To displace more water the boat will sink a little and it will pass under the bridge. Of course, the rocks should not be placed over the topmost rock but at a level below it.

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A ferry boat loaded with rocks has to pass under a bridge. The maximum height of the rocks is slightly more than the height of the bridge so that the boat just fails to pass under the bridge. Should some of the rocks be removed or some more rocks be added?

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