GENIUS TOY TAIWAN CO. LTD 7447-W85-B 사용자 설명서
EXPERIMENT 3
HERE’S HOW
As the gears on the hay rake turn
look at the speed of the different
different gears. What do you
observe about the speed of the
small gray gears and large green
gears?
Spinning gears
HAY RAKE
4
3
30
5
100-mm
Done!