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Re: [Phys-l] Work done by Static Friction



Thanks -- now I understand your method.

bc

Brian Whatcott wrote:

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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