The participants were asked to come up with as many models as they could with a piece of rope and a ball. Here is a list of the ideas that were mentioned at the reception.

Robin and Mitsue

atom

trajectory/quadratice function

reflection of bounce

Lee and Erin

knots

different integral signs

Zodiac symbols: taurus and venus

comet with tail

Closed curve: simple or compound

surface of revolution

Cynthia and Morris

freely jointed/flexible polymer

persistence length of polymer

gravity

spin of baseball

drag in fluid mechanics

Dwyane and Mark

students who don't study

Paul and Jeremy

comparison throwing

breaking the sound barrier through whipping rope

comparison of floating properties

comparison of combustion

Sandy and Carolyn

probability/Buffon's needle-like experiment

Jose and Bob H.

transverse wave

fractions

powers of two

inclined plane

Doug, Ermelinda and Jennie

circle

belt, necklace, hairband

trig functions

centrifugal force

earth orbit around sun

gravity

geometric figures

Robin and Bob T

wind resistance

moss collecting on rolling stone

pendulum

pre-Galileo model of planets