長さの違う振り子を同時に動かすと

>> DIRECT DOWNLOAD LINK 🎞️ #1 <<

>> DIRECT DOWNLOAD LINK 🎞️ #2 <<

>> COPY / PASTE LINK PLEASE 🎞️ #3 <<

>> COPY / PASTE LINK PLEASE 🎵 MP3 <<

YOUR LINK HERE:

http://youtube.com/watch?v=gViLqrT6UUU

http://www.nicovideo.jp/watch/sm14352459

#############################