hcv question: why does a fat man fall over while bending?
A. for a fat man, the center of mass is above his waist. so if he bends, it is horizontally displaced as compared to his feet.
the normal reaction does not shift its line of action. the man's weight, due to changed position of center of mass, acts along another line.
generally, the normal reaction and weight act along same line so he doesn't fall over. however if they act along different lines, this sets up a torque that makes him fall frontwards
Moderation Team
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