A portion of a mechanical coin sorter works as follows: Pennies and dimes roll down the 29 degrees incline, the last triangular portion of which pivots freely about a horizontal axis through O. Dimes are light enough(2.28 grams each) so that the triangular portion remains stationary, and the dimes roll into the right collection column. Pennies on the other hand are heavy enough(3.06 gram each) so that the triangular portion pivots clockwise, and the pennies roll into the left collection column. Determine the moment about O of the weight of the penny in terms of the slant distance s in millimetres. Derive your answer for s=5.5 mm. The moment is positive if counterclockwise, negative if clockwise
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