Track is made of .5
inch diameter tubing
 The cart is a 0.005 kg
metal ball
 The initial height is 14
inches
 The track is supported
by wood dowels,
metal brackets, and
LOTS of hot glue!!!
 It consists of a series of
drops, hills, and
horizontal spirals


PE=mgh
=(0.005 kg)(32.2 ft/sec)(1.167ft)
=0.187887 J




PE turns into kinetic energy
during the initial drop
Kinetic energy used while the
ball is in motion
Potential energy is stored at the
top of the smaller hills
Energy is lost by friction between
metal ball and tubing




Original tri-tubing system failed by coming apart
The intended loop was too inconsistent because the tubes tried to form
back to original shape
One larger tube cut in half did not have enough surface area to keep the
high velocity ball on the track
The original design was not enough track to run the complete 15 seconds