LEGO Motors as Generators How Efficient? Kinetic energy of turning the axle on a motor can be used to generate
electricity to light a lamp or even turn another motor.
Students are to plan an experiment to determine how efficient the generator
is at turning another motor.
When one motor was used as a generator and the handle turned
10 time the other motor went around 9 and a half times.
Turning 100 times and counting the other side was a way to figure
out the percent efficiency. But it was hard to keep track of the count.
The efficiency was less with a heavier object.
When the weight was farther away from the axle the % was lower.
Generator Efficiency can be seen by moving one car and watching
how well the other car keeps up.
