Dinsdag 10 januari 2006, 22:12
(a) A very powerful vacuum cleaner has a hose 2.86 cm in diameter. With no nozzle on the hose, what is the weight of the heaviest brick that the cleaner can lift? (Fig. P14.10a) (b) What If? A very powerful octopus uses one sucker of diameter 2.86 cm on each of the two shells of a clam in an attempt to pull the shells apart (Fig. 14.10b). Find the greatest force the octopus can exert in salt water 32.3 m deep. Caution: Experimental verification can be interesting, but do not drop a brick on your foot. Do not overheat the motor of a vacuum cleaner. Do not get an octopus mad at you.
Of hoe een zware fysica-boek op het einde van een frusterende blokdag toch nog een lach op mijn gezicht kan toveren.