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Elephant on the Bridge/Lesson Document: Difference between revisions
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# Any other forces (pushes/pulls) on the elephant or on the bridge? | # Any other forces (pushes/pulls) on the elephant or on the bridge? | ||
[[Image:simple view.jpeg| | [[Image:simple view.jpeg|800x600px]] | ||
There are many forces acting on both the bridge and elephant in this situation. The explanation provided here is a simplified one which deals only with the forces acting on the elephant. | There are many forces acting on both the bridge and elephant in this situation. The explanation provided here is a simplified one which deals only with the forces acting on the elephant. | ||
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# The force of reaction from the bridge pushing upwards on the elephant’s feet (see insert for fuller explanation). | # The force of reaction from the bridge pushing upwards on the elephant’s feet (see insert for fuller explanation). | ||
[[Image:elephants foot. | [[Image:elephants foot.jpeg|800x800px]] | ||
But because the bridge sags, its surface is not horizontal. This means that there is: | But because the bridge sags, its surface is not horizontal. This means that there is: | ||
