Site Navigation

Your Account

Choose Language

1.0

Major VersionM

by Procheta Mallik

Introduction

Ring magnets behave fascinatingly when inserted into any metal rod that is magnetic. Here, we use a cycle spoke as the rod and notice the wonderful behaviour of the magnets as they spin down the spoke! This causes vibrations at the bottom of the spoke, where a cardboard spinner spins rapidly as the magnets descend!

    • Be mindful of sharp edges of the spoke.

    • Handle scissors with care

  1. Take a long cycle spoke . Pass the wooden bead through the cycle spoke's screw end and let it rest on the other end. The bead acts as a support for the spinner/fan so that it does not slip through the cycle spoke.
    • Take a long cycle spoke .

    • Pass the wooden bead through the cycle spoke's screw end and let it rest on the other end.

    • The bead acts as a support for the spinner/fan so that it does not slip through the cycle spoke.

    • Make a spinner/fan (circular, rectangular or star shaped) out of a piece of cardboard, decorate it, punch a hole at its centre and insert it into the spoke.

  2. Place two magnets over each other Pass the magnets through the screw end of the spoke and leave them near that end
    • Place two magnets over each other

    • Pass the magnets through the screw end of the spoke and leave them near that end

  3. With the screw end at the top, hold the spoke vertically and give the magnets enough of a twirl so that they can start moving down the spoke The fan should start to spin as the magnet moves down the spoke
    • With the screw end at the top, hold the spoke vertically and give the magnets enough of a twirl so that they can start moving down the spoke

    • The fan should start to spin as the magnet moves down the spoke

    • The hole in the fan is either too small or too big.

    • The hole in the fan is not centred

    • The inside surface of the magnet(s) are too rough, hence preventing the magnets from spinning.

    • The fan is too big/unbalanced, thereby preventing itself from spinning.

    • The shape of the fan/spinner is asymmetrical

    • At what length of the spoke does the fan start spinning ?

    • Can you increase the speed of rotation? How?

    • Can you change the direction of rotation? How?

    • What happens when you add more magnets?

    • What happens to the colours on the disc when it spins ? Why does it happen ?

    • Make spinner/fan of different sizes and observe if the spin differs in each case.

Finish Line

Vishal Bhatt

Member since: 04/26/2017

2,713 Reputation

76 Guides authored

0 Comments