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7 September, 20:33

An external, frictionless pin only prevents rotation. A. True B. False

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  1. 7 September, 20:49
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    False

    Explanation:

    The roller displacement at an external, friction less rotation pin is found to be zero as it has a support which is no-yielding but still provides rotation to the object where as at an external pin a shear force is present and the moment is absent which means that at an external pin its not the rotation that is absent but its the moment which comes out to be zero.
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