Electromechanical Marble Machine (Pre-Research Knowledge)
Electrical
wires
sensors
motor
switches
Mechanisms
magnetic
pulleys
chain & sprockets
Marble Machine
cost
size
materials
structure
design
delivery
Delivery
slide
Slide
tracks
steps
tube
Gravity
downward forces
Forces
centrifugal
forces
linear
rotary
momentum
Inventor
Mechnical
lift
deliver
why
who
when
where
rack & pinion