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I have to write a paper about what friction, resistance, motion and inertia has to do with a bobblehead.? | |
i have to include: motion, force, center of gravity, lever, inertia, friction, and resistance. my bobblehead is a pipecleaner with a head on one end and lil fuzz balls on the other (counter weights). its a book worm. we drilled a hole thru 2 pieces of wood, put a hook in the hole, and the worm hangs on the hook and bobbles. its saturday, and the paper is due on monday!! please help me, i have NO clue what to write!!!
Answers:
1Inertia causes the moving mass to want to reamin in motion (Newton's 1st law).
However, since the center of balance and center of gravity are not equal, that inertia forces the mass of the object to be raised up against gravity -- kinetic energy is converted into potewntial energy until the object comes to a stop, then the potential energy is converted back into kinetic energy as the object begins moving in the opposite direction from the original direction.
The law of conservation of energy would dictate that if this were a frictionless process, then it would continue forever. But the fuzz balls (and the rest of the bobblehead) encounter air resistance plus the fulcrum point also encounters some friction, and the resistance of moving against that friction dissipates some of the kinetic energy as heat or motion of the air molecules, so that the process is continuously "winding down" (each cycle of motion has a little bit less energy than the previous one).
Eventually the kinetic energy or potential energy stored in the system will be less than is needed to produce a force greater than that of the fulcrum's friction, and the whole bobblehead will come to a stop.
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