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I need to know how much power it takes to accelerate a motorcycle chain weighing 1 pound in 1 second to a speed that would equal 20mph at the wheel from a dead stop.

The wheel has a diameter of 20 inches.

The drive sprocket has a diameter of 2.25 inches.

The driven sprocket has a diameter of 8.5 inches.

If for some reason we need the length of the chain, I suppose that would be 100 links at 5/8 inch per link.

Assume all frictions are zero and all sprockets and wheels are massless.

Here's where I tried: