help needed with practical on topic motors and generators (1 Viewer)

[some_girl]

i posted in the "motors and generators" section but i didnt get much help so i hope this time would be better ?

the aim of the prac is:

"Design an experiment to investigate how the amplitude of a pendulum formed by a magnet and thread varies against time with or without a nearby electrical conductor"

-- i need help because i dont understand what the aim is asking for. i hope someone can give me a brief overview of what i need to do or explain what the aim means coz i really dont get it.

help would be much appreciated

 

[Xayma]

The aim is to illustrate Lenz's Law.

If you think of that and the Conservation of Energy you should be able to figure out the experiment.

 

[BlackJack]

You can try to do this physically. Get a magnet and make the pendulum with that as the weight, then swing it close to a large piece of metal. Observe the pendulum with and without that piece a metal (an electrical conductor) and think about what you need to write.

amplitude vs. time => how much the pendulum swings as time goes on.

That okay?

 

[some_girl]

what is the amplitude of a pendulum and how would i go about measuring the amplitude?

thanks BlackJack!! ur theory seems cool! if i replaced the magnet on the pendulum with a metal (conductor [ferametal????]) and have 2 magnets sitting on either side of the pendulum, would that still work?