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At 08:06 PM 3/17/2007, you wrote:
And the torque at the road? -- how about a cog railway?
bc
If I instantiated a lever with fulcrum in a rail cog, bearing on a
vehicle hub and activated by a force at some higher point.
no modeler would see much of a problem with it, I don't suppose.
But to answer the question: a force at the rail cog provides
a torque to the Earth mass to my mind.
Brian Whatcott Altus OK Eureka!
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