From this evening's physics assignment: While watching the crane in operation, an observer mentions to you that for a given load there is a maximum angle theta_max that the crane arm can make with the horizontal without tipping the crane over. Is this correct? ... Later that week, while watching the same crane in operation, a different observer mentions to you that there is a maximum load the crane can lift without tipping, and you can find that maximum load by observing the minimum angle theta_min that the crane arm makes with the horizontal. Is this correct?
All right, so extra credit: Even later that week, you find yourself watching the crane again. What kind of sick fascination do you have with this machinery? Is your obsession with the strength and angle of the crane arm compensating for something? Do you exude some strange vibes that scream out to strangers, "Please, tell me random anecdotes about crane arms! I will listen and consider seriously, even if you're not even right!" Do you collect these bizarre factoids? Do you ever think you'll actually need to know this? Do you just not want to go home and do your physics homework?
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