A desktop experiment to demonstrate the linear and quadratic velocity dependence of drag on an object falling in a resistive medium was developed for an undergraduate laboratory. The motion of ball bearings dropped into a cylinder filled with fluid is captured and measured using computer-based imaging. The terminal velocity of falling spheres is measured as a function of size at low and high Re...

This paper proposes a time optimal path planning while considering the physical constraints of wheeled mobile robots along a high curvature Bezier curve. The proposed algorithm overcomes drawbacks of preceding results. A trajectory produced through acceleration limits showed long traveling time, non-uniform sampling time and unsatisfied terminal velocity. A convolution-based method to consider ...

gastric bezoars are gastric masses, which rarely cause intestinal obstruction by passing through the small bowel. in this article, we report a 56 year-old man with no history of gastric surgery who presented with intestinal obstruction. the obstruction seemed to be in terminal ileum. colonoscopy was done and a movable mass was noted, which was extracted from the cecum by colonoscope resulting i...