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#36
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02-23-2022, 02:49 AM
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Re: Uzbekistan - Elderly Man and Granddaughter Fall From Escalator
I've seen similar or even worse construction in a mall (probably MBK mall) in Bangkok... you're literally hanging on the escalator from atleast 80 feet high. If you're dizzy or have fear of heights, better don't board the top escalator
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#38
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02-25-2022, 12:02 AM
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Re: Uzbekistan - Elderly Man and Granddaughter Fall From Escalator
This video demonstrates some basic laws of physics - the transfer of energy from one form to another. All forces have equal and opposite forces that can be used to describe and quantify how objects move and resist movement. The man enters the escalator grabbing the rail with his left hand and thus is preparing to hold tight for the ride down. It looks like both of his shoes slip off the edge of the step as it forms from the conveyor belt. He tries to compensate for the downward momentum by rotating CCW and grabbing the rail with his right hand. The kid's weight at shoulder height adds considerable momentum to his rotation. Grabbing the rail changes his rotational force to horizontal motion, which pushes him and his kid laterally over the rail. Potential energy - teetering on top of a step. Vertical kinetic energy - falling off the step. Rotational force - transfering a short falling motion to rotational motion. Horizontal kinetic energy - grabbing the rail to transfer the rotational motion to horizontal motion New potential energy - gravity and elevation above the deck after they flip over the rail New kinetic energy - Their drop to the deck Tissue damage and some rebound motion - transfer of the kinetic energy into bodies when they meet the deck |