Pendulum mechanics

Michael Lorrey (
Thu, 17 Jul 1997 20:13:40 -0400

I thought I'd post this question for those even more scientifically
abled than I to explain:

How can a little kid (or an adult for that matter) sit on a perfectly
still playground swing, begin rocking back and forth, and within a
minute be wizzing back and forth to a pretty good height, without ever
touching the ground or other still grounded object?

Anyone who can supply their own answers, with equations if possible, is
welcome to reply...

			Michael Lorrey
------------------------------------------------------------		Inventor of the Lorrey Drive

Mikey's Animatronic Factory My Own Nuclear Espionage Agency (MONEA) MIKEYMAS(tm): The New Internet Holiday Transhumans of New Hampshire (>HNH) ------------------------------------------------------------ #!/usr/local/bin/perl-0777---export-a-crypto-system-sig-RC4-3-lines-PERL @k=unpack('C*',pack('H*',shift));for(@t=@s=0..255){$y=($k[$_%@k]+$s[$x=$_ ]+$y)%256;&S}$x=$y=0;for(unpack('C*',<>)){$x++;$y=($s[$x%=256]+$y)%256; &S;print pack(C,$_^=$s[($s[$x]+$s[$y])%256])}sub S{@s[$x,$y]=@s[$y,$x]}