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The rod OA rotates in the horizontal plane such that theta equals0.67t^3 radian, and collar B is sliding outward along OA so that r=70t^2 mm. If in both cases t is in seconds, determine the radial acceleration (mm/s^2) of the collar when the collar is 93 mm from O. Round off only on the final answer expressed in 3 decimal places.

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The rod OA rotates in the horizontal plane such that e= 0.67t3 radian, and collar B is sliding outward along OA so that r=70t mm. If in both cases t is in seconds, determine the
radial acceleration (mm/s-) of the collar when the collar is 93 mm from O. Round off only on the final answer expressed in 3 decimal places.
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