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Can I roll a spehre with out friction acting on it? (Not a frictionless surface)What about the front car wheel?

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My physics Prof confused me.
asked Dec 3, 2014 in Mechanics by kattathurai (120 points)

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Zero never exist. It's ideal imagination and nothing else. One can minimize it to practically negligible value but not zero.
Applicable if you are dealing with physical body.
answered Sep 12, 2017 by giginailo (2,580 points)

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A rod falling on a friction less surface
asked Apr 19, 2018 in Physics by vikas_rv (120 points)
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