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Unformatted text preview: of the vector product, the vector [tau] lies parallel to the zaxis, and its direction (either up or down) can be determined using the righthand rule. Torque defined in this way has meaning only with respect to a specified origin. The direction of the torque is always at right angles to the plane formed by the vectors r and F. The torque is zero if r = 0 m, F = 0 N or r is parallel or antiparallel to F....
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 Fall '09
 Force, Mass

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