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Sep 11, 2019 at 18:33 comment added Barry But answer mentioned in book is 4
Sep 11, 2019 at 16:02 comment added Eli A massless rod has zero degree of freedom, a particle that move on it has 1 degree of freedom
Sep 11, 2019 at 15:06 history edited Qmechanic CC BY-SA 4.0
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Sep 11, 2019 at 14:43 history edited Qmechanic
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Sep 11, 2019 at 14:40 comment added Barry massless rod is an ideal case,so massless rod should be treated as a 1D line or a rigid body with mass tending to zero or something with 0 degree of freedom(like string is treated in simple pendulum).
Sep 11, 2019 at 14:38 history asked Barry CC BY-SA 4.0