Quote:
Originally Posted by tr6scott
Great work...
Your totes never seem to have the dreaded, stand up on end problem we have seen in other videos.
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The tote starts with zero linear velocity and zero angular velocity. For the tote to tumble, the CG of tote must pass the end of the ramp. When the CG of the tote passes the end, there is a couple between the weight of the tote acting at the CG and the reaction from the end of the ramp. This couple imparts angular velocity to the tote.
Visualize the angled ramp from the feeder station as extending to an arbitrary height from the floor. Going to one extreme, imagine the dropoff from the end of the ramp being 1 inch. The sliding tote would contact the floor before the CG passed the end of the ramp, so no tumble. (neglecting the horizontal force of the point in contact with the floor) As the height of the dropoff increases, the more likely the tote is to tumble. The trick is to extend the ramp until the dropoff height is low enough that the tote doesn't tumble and end up on end.