Science project A.Maths roller-towel, frictionless
toilet roll unwind T seconds.
28-12-2006.

bcc; nzmm m.th, prof jfh, nzm, geo rsnz, j butcher,
tom,newsc, mzd ed sue g, rap art., rnz, tvnzwn.

...this problem needs applied maths, etc.
or stop-watch.
simple or difficult? may not be original, somebody
else shd have thought about it!!

Dear Editor,

Suppose toilet roll , looks like--- 9.
Spindle = 60cm above floor.

190 sheets. Inside diameter 35mm, outside diam 105mm.
End h..anging down touches the floor.
Starting at rest.

Suppose spindle +++ (o) O roll is uniform density
as toilet paper.
Cylinder== concentric spiral focus//axis.,
frictionless.
involves ANGULAR MOMENTUM.

Consider gravity, torque, dynamics, kinematics,
newton's laws of motion.
acceleration due to gravity,
e.g. 9.8 metre/second^2. uniform. Ignore earth
rotation coriolis.

Figure like '9' nine.
Force approximately 60 cm of paper, hanging down.
volume/density/diameter.
How much remaining on roll at time t, diameter and
rotation spin?.
Centrifugal force. Not vertical, flies out.

Oouch!!. Will roll explode disintegrate without
friction? what is the
Curve, form?, 'the thinker' rodin auguste musee
sculpture, le penseur d Auguste Rodin? paris fr.

ex. surf-casting 'birds-nest'. curve. hi-velocity.

Assume paper evaporates and disappears when it reaches
the floor. THEN xxx...
HOW MANY SECONDS TO COMPLETELY DROP ON FLOOR?.
PUZZLE. QUESTION. PROBLEM. DISCUSS.

DON MCDONALD, N.Z.
Thank you. 28/12/06.

[interrupt radio new zealand- 1030am. Leaking of a
sheet of paper// larger story. Ian botham england
bowling plans, stolen..]
....................
Don S. McDonald