One type of home coffee grinder has a small blade that rotates very rapidly and cuts the coffee beans into powder nothing prevents the coffee beans form moving so why dont they get out of the way when the blade begins to push on them?
2007-01-24 05:30:03 · 4 answers · asked by Yarka 1 in Science & Mathematics ➔ Physics
Actually, both inertia (the mass of the bean) and crowding keep them from moving. Imagine you were walking alone down the street and suddenly a guy on a motorcycle with a samuri sword rode by and hacked at you. Before you started to move, the sword would cut through you. Imagine again you were walking in a crowd and a walking person came toward you with a sword. This time you might be able to move your body out of the way fast enough to avoid the sword, but you would bump into other people and they might bump you back, so you could not get clear of the sword.
2007-01-24 05:37:56 · answer #1 · answered by Mike1942f 7 · 0⤊ 0⤋
hello. good intiuition. basically you see the concept of inertia play here. Imagine yourself in the jar : as the blade tende to strike the coffee beans the beans' inertia thes to resist any change in their position and state of motion. but the blow is rather jolting and cannot be described by the everyday notion of pushing or pulling etc. Rather u may better understand it as an IMPULSE which acts on the beans and rupture the molecular bonds and lattices, before the force of strike can travel to the other end of the bean. Thus I and U can enjoy tne finely ground beans....... Thenks to IMPULSE. Goodbye
2016-05-24 04:40:29 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The blade are too fast for the beans to get out of their way. Also other beans obstruct this from happening.
2007-01-24 06:59:55 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Duh, coffee beans are suicidal.
2007-01-24 05:46:08 · answer #4 · answered by Vigilant Möth 2 · 0⤊ 1⤋