16.103 A 5-kg uniform square plate is supported by two identical 1.5-kg uniform slender rods AD and BE. It is held in the position shown by rope CF Determine, immediately after rope CF has been cut, (a) the ac- celeration of the plate, (b) the force exerted on the plate at point B. 240 mm Fig. P16.103 200 mm 240 mm-

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