An Experiment To Help You Hit The Ground Running - Thames & Kosmos Vibrobot Experiment Manual

Are you strong
enough for the
vibrating motor?
YOU WILL NEED
› Vibrating motor
› 3 x AAA batteries (1.5-volt, type AAA/LR03) or
3 x AAA rechargeable batteries (1.2-volt, min.
1100 mAh)
HERE'S HOW
1. Find the vibrating motor in the box and
open the cover on the underside. That's how
you get to the battery compartments.
2. Insert the batteries into the battery
compartments as indicated on the inside.
3. Now place the cover back on.
4. Hold the vibrating motor very firmly and
slide the switch on its underside in one
direction or the other.
5. Next, return the switch to its original
position and slide it in the opposite
direction.
WHAT'S HAPPENING
Look into the top of the vibrating motor. Do you see how
the little arm inside starts to turn? It starts slowly, but
gradually moves faster and faster. You don't just see it,
you can actually feel it — it's so powerful that you have
to hold the vibrating motor tightly to keep it from getting
away. The vibration is caused by the movement of this
arm, which is equipped with a weight and is mounted a
little off-center. It's the rapid out-of-balance rotation
that generates the force you feel.
Are you strong
enough for the
vibrating motor?
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