Question

A chain is 12 ft long. Six feet of the chain are held extended on a...

A chain is 12 ft long. Six feet of the chain are held extended on a frictionless flat table which is more than 12 ft above the ground, the other 6 ft hangs over the table. When and with what velocity will the end of the chain leave the table after its release?

The answer is 17.0 ft/sec; √(3.8)log(2+√3) sec. The book doesn't explain how to do these problems very well and I do math for fun. A detailed working of a problem like this would help A LOT.

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