how to stop a swinging pendulum by eddy current damper?

Answer 1

So long as the pendulum has some electrically conducting material (i.e. copper, aluminum) that passes in between a pair of magnetic poles, it will stop. The stronger the magnet, the stronger the dampening effect. With a strong enough magnet, you can stop the pendulum before it reaches its nadir.

I remember performing that experiment in college physics -- it was cool to try and get the pendulum moving fast, because the faster it moved through the field, the larger the eddy currents, and the faster it stopped.

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Answer 2

specific. there is often some volume of friction in the equipment. even while WEIGHTLESS, there is friction -- the rubbing of one section opposed to yet another. and friction represents a transformation of power. by using friction, the kinetic power of the pendulum is replaced into warmth power in the rubbing areas. finally, the friction will "waste" each and all of the kinetic power, and the pendulum will end. playstation : A pendulum that by no potential stops may well be a Perpetual action device, which has been shown impossible many many situations. there is often a loss of power, no longer rely how small.

Answer 3

If it's a metal pendulum, have it swing through a magnetic field.