05 May '08 16:351 edit

This time we have a hollow sphere that weighs 10 pounds.

We pour 2 pound of sand inside the hollow sphere but do not fill up the entire void inside the sphere.

The bridge can only support 11 pounds before it collapses instantaneously.

Using the concept of centrifugal force (ie sand in a bucket) is there a speed that you can roll the sphere such that the sand will spread out around the inside of the sphere and thus reduce the amount of downward force as the sphere travels along the bridge?

Make any assumptions you need to that are realistic.

We pour 2 pound of sand inside the hollow sphere but do not fill up the entire void inside the sphere.

The bridge can only support 11 pounds before it collapses instantaneously.

Using the concept of centrifugal force (ie sand in a bucket) is there a speed that you can roll the sphere such that the sand will spread out around the inside of the sphere and thus reduce the amount of downward force as the sphere travels along the bridge?

Make any assumptions you need to that are realistic.